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Xiaomi Mix 4 smartphone review - High-end with an invisible selfie camera

Notch, no thanks. The Mix 4 is the first smartphone from Xiaomi with a front camera under the display. The glass and ceramics clad 6.67-inch smartphone offers additional purchase arguments with its high-end Snapdragon 888+ SoC, up to 12 GB of RAM, an AMOLED panel, and a triple-camera system with 108 MP. In addition, there is also quick charging at 120 watts, recharging the battery in less than 30 minutes.
Manuel Masiero, 👁 Daniel Schmidt (translated by Mark Riege), 🇩🇪 🇳🇱 ...

With the Mix 4, Xiaomi introduces a new high-end smartphone with impressive-sounding hardware equipment. The 6.67-inch Mix 4 has one of the fastest mobile SoCs with the Snapdragon 888+ 5G. In addition, there are a 120-Hz AMOLED panel, up to 12 GB RAM and 512 GB storage, a 120-Watt charger offering quick charging, and 50-Watt wireless charging. The camera also shows some high-end ambitions with the 108-MP Samsung Isocell HMX1 as the main sensor.

But this isn't all, and the camera offers another interesting detail. The Mix 4 is the first Xiaomi smartphone with a front camera that is hidden under the screen. It has a 20-MP resolution and goes completely without any notch or pop-up mechanics. However, this isn't a completely new feature, since other smartphones such as the Samsung Galaxy Fold 3 and ZTE Axon 30 also offer an under-display camera.

Officially, the Xiaomi Mix 4 is only available in China, but you can also get it in Germany from importers such as TradingShenzhen who provided us with our test unit. We find out in this test how well the Mix 4 fares against the current high-end competitors and whether its under-display camera also does a good job in practice.

Xiaomi Mix 4
Processor
Qualcomm Snapdragon 888 Plus 5G 8 x 1.8 - 3 GHz, Cortex-X1 / A78 / A55 (Kryo 680)
Graphics adapter
Memory
12288 MB 
Display
6.67 inch 20:9, 2400 x 1080 pixel 395 PPI, capacitive, AMOLED, FHD+, 480 Hz scan rate, Gorilla Glass Victus, glossy: yes, HDR, 120 Hz
Storage
512 GB UFS 3.1 Flash, 512 GB 
, 481.2 GB free
Connections
1 USB 2.0, USB-C Power Delivery (PD), Audio Connections: 3.5 mm Headset jack, 1 Fingerprint Reader, NFC, Brightness Sensor, Sensors: accelerometer, gyro, proximity, compass, color spectrum, DRM Widevine L1, Camera2 API Level 3
Networking
Wi-Fi 6E (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/ax = Wi-Fi 6), Bluetooth 5.2, 2G (850/900/1800/1900 MHz), 3G (850/1900/2100 MHz), 4G (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28), 5G (N1/N3/N5/N8/N28/N41/N77/N78/N79), Dual SIM, LTE, 5G, GPS
Size
height x width x depth (in mm): 8.02 x 162.65 x 75.35 ( = 0.32 x 6.4 x 2.97 in)
Battery
4500 mAh Lithium-Polymer
Charging
wireless charging, fast charging / Quickcharge
Operating System
Android 11
Camera
Primary Camera: 108 MPix (Samsung ISOCELL HMX, OIS, f/1.95, 24mm, 1/1.33", 0.8µm) + 8MP (OIS, 5x optical zoom, f/4.1, 120mm) + 13MP Ultrawide (f/2.2, 12mm, 1/3.06", 1.12µm)
Secondary Camera: 20 MPix under-display, 27mm, 1/3.4", 0.8µm
Additional features
Speakers: Harman Kardon dual speakers, Keyboard: virtual, 120 W charger, USB cable, protective case, MiUI 12.5, 12 Months Warranty, fanless
Weight
225 g ( = 7.94 oz / 0.5 pounds), Power Supply: 185 g ( = 6.53 oz / 0.41 pounds)
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Possible Competitors in Comparison

Rating
Date
Model
Weight
Drive
Size
Resolution
Best Price
87.6 %
12/2021
Xiaomi Mix 4
SD 888+ 5G, Adreno 660
225 g512 GB UFS 3.1 Flash6.67"2400x1080
90.6 %
10/2021
Apple iPhone 13 Pro
A15, A15 GPU 5-Core
203 g256 GB NVMe6.10"2532x1170
88.7 %
03/2021
Oppo Find X3 Pro
SD 888 5G, Adreno 660
193 g256 GB UFS 3.1 Flash6.70"3216x1440
90.2 %
02/2021
Samsung Galaxy S21 Ultra
Exynos 2100 5G, Mali-G78 MP14
227 g128 GB UFS 3.1 Flash6.80"3200x1440
86.8 %
07/2021
Sony Xperia 1 III
SD 888 5G, Adreno 660
186 g256 GB UFS 3.1 Flash6.50"3840x1644

Case - Bezel-less design due to a curved display

Xiaomi has wrapped the Mix 4 in a unibody case made of glass and ceramics. The design and workmanship are very attractive and the case looks like made of one piece. While with a weight of 225 grams (~8 oz), it is not one of the lightest 6.67-inch smartphones, the slightly higher weight also underlines the high-quality impression.

The AMOLED display is protected by Gorilla Glass Victus, and its discretely rounded long edges merge into the unibody ceramic frame. On the sides and top, the bezels are only a couple of millimeters wide, but they are still sufficient to prevent unintended input on the 120-Hz display. Only the bottom bezel turns out slightly wider, but there is still the overall impression of an almost bezel-less design. The display takes up about 88% of the font area.

The shiny ceramic back makes the Mix 4 quite a looker, since the back cover is more reflective than the display. Unfortunately this also turns the back into a fingerprint magnet. Since it is also fairly slippery when holding it in the hand, it is recommended to use the included transparent case cover for the Mix 4.

If you disregard its shiny surface, the back cover has a simple design. The only things that stand out are the vertical Xiaomi lettering at the bottom edge and the massive camera module on top that sticks out from the back cover by several millimeters. While the camera system is always kept in black, you can choose among black, white, or gray color for the case cover.

Size Comparison

165.1 mm / 6.5 inch 75.6 mm / 2.98 inch 8.9 mm / 0.3504 inch 227 g0.5 lbs165 mm / 6.5 inch 71 mm / 2.8 inch 8.2 mm / 0.3228 inch 186 g0.4101 lbs163.6 mm / 6.44 inch 74 mm / 2.91 inch 8.26 mm / 0.3252 inch 193 g0.4255 lbs162.65 mm / 6.4 inch 75.35 mm / 2.97 inch 8.02 mm / 0.3157 inch 225 g0.496 lbs146.7 mm / 5.78 inch 71.5 mm / 2.81 inch 7.65 mm / 0.3012 inch 203 g0.4475 lbs

Equipment - Up to 12 GB RAM and 512 GB storage in the Mix 4

The Xiaomi Mix 4 is available with 8 or 12 GB LPDDR5-RAM and 128, 256, or 512 GB UFS-3.1 storage. Four different storage combinations are offered: 8/128 GB, 8/256 GB, 12/256 GB, and 12/512 GB. The smallest version of the Mix 4 costs around 600 Euros (~$675) at TradingShenzhen, for example, and you have to pay about 790 Euros (~$889) for the top version with 12/512 GB of storage. There is no microSD slot.

The remaining equipment of the Mix 4 includes NFC, an IR blaster, and dual-SIM with 5G. The USB-C port supports only USB-2.0 speed but can also be used to connect peripheral devices with its OTG compatibility. Since there is no dedicated audio port, it also has to fulfil the role of the audio output. However, you have to purchase an adapter yourself, since this is not included. 

Left: no connections
Left: no connections
Right: power key, volume rocker
Right: power key, volume rocker
Top: IR blaster, microphone
Top: IR blaster, microphone
Bottom: dual-SIM, USB-C 2.0, microphone, speaker
Bottom: dual-SIM, USB-C 2.0, microphone, speaker

Software - Google Play can be installed easily later

The Mix 4 includes Android 11 and Xiaomi's MIUI 12.5 user interface. Xiaomi usually provides its current smartphone models with updates in 3-month intervals, so that the Android security patches should also stay current at all times. At the time of our test (end of November), they were at the level of October 1, so still fairly fresh in our test unit with MIUI-Version 12.5.12.

Since you can currently only get the Mix 4 by importing it, there is also only an English/Chinese language ROM. Google Play is also not installed. However, since all the necessary services for it are already preinstalled on the Mix 4, you can easily install Google Play later using an APK file. 

Communication and GNSS - Fast WiFi 6E and accurate GPS

The Mix 4 supports NFC and Bluetooth 5.2. The mobile communication frequency range is covered with 2G and 3G, as well as 14 4G bands and 9 5G bands. The supported bands also include all the 4G bands that are important in Germany (band 3, 7, 20) as well as the n78 5G band that is used by all the German 5G providers.

In terms of WLAN, the Mix 4 communicates with WiFi 6E, demonstrating very fast speeds with the transfer rates remaining very constant at the same time. In combination with our Linksys Nighthawk AX12 reference router, the transfer rate when sending earns it first place among our comparison devices, barely ahead of the Samsung Galaxy S21 Ultra. When receiving data, only the Oppo Find X3 Pro is faster, but also by quite a bit.

Networking
iperf3 Client (transmit) 1 m 4M x10 Netgear AX12
Oppo Find X3 Pro
Adreno 660, SD 888 5G, 256 GB UFS 3.1 Flash
1281 (635min - 1400max) MBit/s ∼100% +47%
Xiaomi Mix 4
Adreno 660, SD 888+ 5G, 512 GB UFS 3.1 Flash
870 (423min - 910max) MBit/s ∼68%
Samsung Galaxy S21 Ultra
Mali-G78 MP14, Exynos 2100 5G, 128 GB UFS 3.1 Flash
803 (437min - 889max) MBit/s ∼63% -8%
Samsung Galaxy S21 Ultra
Mali-G78 MP14, Exynos 2100 5G, 128 GB UFS 3.1 Flash
633 (523min - 703max) MBit/s ∼49% -27%
Apple iPhone 13 Pro
A15 GPU 5-Core, A15, 256 GB NVMe
698 (632min - 775max) MBit/s ∼54% -20%
Sony Xperia 1 III
Adreno 660, SD 888 5G, 256 GB UFS 3.1 Flash
676 (632min - 694max) MBit/s ∼53% -22%
Average of class Smartphone
  (5.59 - 1395, n=233, last 2 years)
481 MBit/s ∼38% -45%
iperf3 Client (receive) 1 m 4M x10 Netgear AX12
Xiaomi Mix 4
Adreno 660, SD 888+ 5G, 512 GB UFS 3.1 Flash
938 (470min - 957max) MBit/s ∼100%
Samsung Galaxy S21 Ultra
Mali-G78 MP14, Exynos 2100 5G, 128 GB UFS 3.1 Flash
922 (904min - 928max) MBit/s ∼98% -2%
Samsung Galaxy S21 Ultra
Mali-G78 MP14, Exynos 2100 5G, 128 GB UFS 3.1 Flash
169 (156min - 180max) MBit/s ∼18% -82%
Sony Xperia 1 III
Adreno 660, SD 888 5G, 256 GB UFS 3.1 Flash
839 (806min - 865max) MBit/s ∼89% -11%
Oppo Find X3 Pro
Adreno 660, SD 888 5G, 256 GB UFS 3.1 Flash
697 (500min - 767max) MBit/s ∼74% -26%
Apple iPhone 13 Pro
A15 GPU 5-Core, A15, 256 GB NVMe
660 (599min - 698max) MBit/s ∼70% -30%
Average of class Smartphone
  (15.5 - 1348, n=233, last 2 years)
469 MBit/s ∼50% -50%
050100150200250300350400450500550600650700750800850900950Tooltip
; iperf3 Client (receive) 1 m 4M x10 Netgear AX12; iperf 3.1.3: Ø912 (470-957)
; iperf3 Client (transmit) 1 m 4M x10 Netgear AX12; iperf 3.1.3: Ø856 (423-910)
GPS reception indoors
GPS reception indoors
GPS reception outdoors
GPS reception outdoors

The Mi 4 finds its current location with the help of the GPS (L1, L5), Glonass (L1), Galieo (E1, E5a), Beidou (B1, B1c, B2a), and QZSS (L1, L5) satellite navigation systems. In our test, it succeeds outdoors as well as indoors with an accuracy of up to 4 meters (~13 ft).

In practice, the locating accuracy can often turn out even slightly better. The best example is our 10-km (~6.2 miles) bike tour, where the Xiaomi Mix 4 records the whole route practically just as accurately as the Garmin Edge 500 professional navigation device that we take for comparison.

GPS test: overview
GPS test: overview
GPS test: around the lake
GPS test: around the lake
GPS test: turning point
GPS test: turning point

Telephone Functions and Voice Quality

The voice quality of the Xiaomi Mix 4 is very good. The microphones capture voices easily understandable and also do a satisfactory job in speaker mode. VoLTE and VoWiFi are both supported by the Mix 4, as long as the service provider plays along.

Cameras - 20-MP selfie camera hidden under the display

Picture taken with the selfie camera
Picture taken with the selfie camera
The under-display camera of the Mix 4 remains invisible in regular operation.
The under-display camera of the Mix 4 remains invisible in regular operation.
Picture taken with the main camera
Picture taken with the main camera

An interesting equipment feature of the Xiaomi Mix 4 is its under-display selfie camera that offers a resolution of 20MP. It is very well hidden, so that you practically don't notice it in everyday operation. To be able to see it, you have to use some tricks such as shining a flashlight onto the display from the side.

Since the camera has to take pictures through the display, the image quality is decent but not outstanding. While it is able to extract some detail from the objects, the pictures always appear slightly blurry. The camera also doesn't like to take pictures against the light at all. However, it is still the best under-display front camera that you can get. Those who only occasionally use it for a video chat should be quite content with its performance.

The triple-camera on the back consists of a 108-MP main camera with an optical image stabilizer (OIS) and the Samsung Isocell HMX1 image sensor. This is accompanied by a 13-MP wide-angle lens with a 120° viewing angle and an 8-MP tele lens with OIS and 5x optical zoom.

We already know the 108-MP main camera from the Xiaomi Mi 11. Xiaomi has continued to optimize the software for the Mix 4, since it produces colors and grayscale more accurately than its sibling. However, compared to the achievements of other smartphones in this price class, we still aren't completely convinced by its performance. In daylight, the Mix 4 is able to take really good pictures that score with a lot of dynamics. But the colors appear too cool in some parts, and the level of detail could still be higher in some areas. This becomes particularly noticeable in weak surrounding light, even though the large sensor can still extract a lot of image information here. 

The wide-angle lens offers a good image quality and takes pictures that are rich in detail but appear slightly blurry and grainy around the edges. The tele lens does a good job, and its 5x optical zoom and optical image stabilizer allow it to still take sharp pictures of objects that are further away. The maximum zoom level is 50x.

The Mix 4 is able to record videos in 4K and at 60 images per second. 8K recordings are also possible, but only at 24 FPS. HDR is also supported. The video quality is fairly good overall. By adjusting the zoom factor, you can switch between the main and the wide-angle lens while recording.

Picture taken with the main camera
Picture taken with the main camera
Picture taken with the wide-angle lens
Picture taken with the wide-angle lens
Picture taken with the main camera
Picture taken with the main camera
Picture taken with the main camera
Picture taken with the main camera

Image Comparison

Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.

Daylight scene 1Daylight scene 2Ultra-wide angle5x zoomLowlight recording
click to load images

When taking pictures under controlled light conditions, it becomes apparent that the main camera is able to reproduce colors fairly accurately, with the exception of some green and blue color tints. The accuracy suffers visibly in low light conditions (bottom color card at 1 Lux), and the test chart is only reproduced fairly blurry.

ColorChecker
16.3 ∆E
8.6 ∆E
15.4 ∆E
19.8 ∆E
11.7 ∆E
6 ∆E
9.2 ∆E
16.3 ∆E
11.5 ∆E
8.4 ∆E
9.3 ∆E
7.6 ∆E
11.2 ∆E
15.7 ∆E
14.6 ∆E
4.4 ∆E
8.2 ∆E
11.2 ∆E
4.8 ∆E
2.7 ∆E
8 ∆E
11.7 ∆E
3.2 ∆E
6.4 ∆E
ColorChecker Xiaomi Mix 4: 10.09 ∆E min: 2.73 - max: 19.75 ∆E
ColorChecker
28.2 ∆E
47 ∆E
35.9 ∆E
35 ∆E
39.1 ∆E
52.8 ∆E
47.2 ∆E
29.7 ∆E
32.4 ∆E
25.7 ∆E
53.3 ∆E
56.4 ∆E
27.7 ∆E
43 ∆E
27.6 ∆E
57 ∆E
32.9 ∆E
40.8 ∆E
57.1 ∆E
58.6 ∆E
46.4 ∆E
35.7 ∆E
24.1 ∆E
13.6 ∆E
ColorChecker Xiaomi Mix 4: 39.47 ∆E min: 13.55 - max: 58.61 ∆E

Accessories and Warranty - 120-Watt charger included

The box of the Xiaomi Mix 4 includes a 120-Watt charger with a CN plug that at 185 grams (~6.5 oz) weighs almost as much as the smartphone. In addition, there are a USB cable (Type-C-to-A), a SIM tool, and a transparent bumper case. A quick start manual is also included, but it requires you to know Chinese.

TradingShenzhen, the provider of our test unit, also includes a free EU plug adapter with the Xiaomi Mix 4. You can also choose the Flip Buds Pro Bluetooth earphones or an 80W wireless charging station among other accessories.

TradingShenzhen offers a 12-month warranty on the Xiaomi Mix 4.

Input Devices and Operation - Smooth display at all times

The operation of the Xiaomi Mix 4 is absolutely smooth. Its 120-Hz panel reduces blurriness of movements to a minimum and creates a very attractive image reproduction that is overall easy on the eyes. 

Since the Mix 4 is currently not offered in the European market, with "Baidu IME for MIUI," "iFlytek for MIUI," and "Sagou Keyboard for MIUI," all the preinstalled keyboards are only optimized for Chinese users. However, once you have installed Google Play via APK file, you can replace the Chinese keyboards also with a standard keyboard such as Google's Gboard without any trouble. At that point, you can also replace the Mi browser with an alternative such as Chrome or Firefox.

You can unlock the Mix 4 biometrically either using a fingerprint sensor that is hidden under the AMOLED display, or via Face Unlock. Both methods work very quickly and reliably. However, if you use face unlocking, you have to make sure that the surrounding light is sufficiently bright, since otherwise the authentication might fail.

Keyboard - landscape
Keyboard - landscape
Keyboard - portrait
Keyboard - portrait

Display - A bright AMOLED panel with very accurate colors

Subpixel grid
Subpixel grid
DC dimming
DC dimming

The 6.67-inch AMOLED display has a 2400 x 1080 pixel resolution and reaches a brightness of 808 cd/m² on average (APL50: 803 cd/m² maximum). If the brightness sensor is not activated, the maximum is 485 cd/m², and we measure about 2.2 cd/m² with the lowest brightness setting.

The AMOLED panel uses pulse-width modulation (PWM) to control the brightness, which can become problematic for sensitive users. At a display brightness higher than 88%, the PWM frequency is a constant 60 Hz. At lower brightness levels (<88%), it varies between 163.4 and 510.2 Hz.

For those who are sensitive to PWM, Xiaomi also offers a flicker reduction (DC dimming). This is called "Antiflicker mode" in the display settings, and it reduces the flickering to a constant 60 Hz.

806
cd/m²
809
cd/m²
801
cd/m²
813
cd/m²
817
cd/m²
800
cd/m²
812
cd/m²
817
cd/m²
797
cd/m²
Distribution of brightness
X-Rite i1Pro 3
Maximum: 817 cd/m² (Nits) Average: 808 cd/m² Minimum: 2.22 cd/m²
Brightness Distribution: 98 %
Center on Battery: 817 cd/m²
Contrast: ∞:1 (Black: 0 cd/m²)
ΔE Color 1 | 0.59-29.43 Ø5.4
ΔE Greyscale 1.8 | 0.64-98 Ø5.6
98.7% sRGB (Calman 2D)
Gamma: 2.29
Xiaomi Mix 4
AMOLED, 2400x1080, 6.67
Apple iPhone 13 Pro
OLED, 2532x1170, 6.10
Oppo Find X3 Pro
AMOLED, 3216x1440, 6.70
Samsung Galaxy S21 Ultra
Dynamic AMOLED 2X, 3200x1440, 6.80
Sony Xperia 1 III
OLED, 3840x1644, 6.50
Screen
11%
6%
-23%
-154%
Brightness middle
817
1050
29%
759
-7%
910
11%
537
-34%
Brightness
808
1058
31%
776
-4%
913
13%
539
-33%
Brightness Distribution
98
98
0%
94
-4%
98
0%
95
-3%
Black Level *
Colorchecker dE 2000 *
1
1
-0%
0.8
20%
2
-100%
4.78
-378%
Colorchecker dE 2000 max. *
2.2
2.4
-9%
1.8
18%
3.1
-41%
7.83
-256%
Greyscale dE 2000 *
1.8
1.5
17%
1.6
11%
2.2
-22%
5.8
-222%
Gamma
2.29 96%
2.2 100%
2.23 99%
2.06 107%
2.363 93%
CCT
6511 100%
6504 100%
6512 100%
6512 100%
7982 81%

* ... smaller is better

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM detected 60 Hz ≤ 100 % brightness setting

The display backlight flickers at 60 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 100 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 60 Hz is very low, so the flickering may cause eyestrain and headaches after extended use.

In comparison: 52 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 21941 (minimum: 5 - maximum: 3846000) Hz was measured.

You can adjust the color reproduction of the Mix 4 by choosing among the "Vivid," "Saturated," and "Original color" color schemes and optionally also adjust the color space and RGB balance. However, you don't really need that much finetuning, since it is really already sufficient to pick the "Original color" scheme. The Mix 4 will then display the grayscale and particularly colors practically like the original tones, the color temperature will follow the ideal line, and the color balance will be almost perfect. 

Color accuracy ("Original color" scheme, sRGB target color space)
Color accuracy ("Original color" scheme, sRGB target color space)
Color space ("Original color" scheme, sRGB target color space)
Color space ("Original color" scheme, sRGB target color space)
Grayscale ("Original color" scheme, sRGB target color space)
Grayscale ("Original color" scheme, sRGB target color space)
Saturation ("Original color" scheme, sRGB target color space)
Saturation ("Original color" scheme, sRGB target color space)

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
2.4 ms ... rise ↗ and fall ↘ combined↗ 1.2 ms rise
↘ 1.2 ms fall
The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming.
In comparison, all tested devices range from 0.8 (minimum) to 240 (maximum) ms. » 2 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (23.4 ms).
       Response Time 50% Grey to 80% Grey
2.8 ms ... rise ↗ and fall ↘ combined↗ 1.6 ms rise
↘ 1.2 ms fall
The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming.
In comparison, all tested devices range from 0.692 (minimum) to 636 (maximum) ms. » 2 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (37 ms).

Outdoors, the Mix 4 naturally benefits from its high display brightness. Despite some reflections, you can also easily see the display contents even in direct sunlight, and there are no problems in the shade at all.

Outdoor use under an overcast sky
Outdoor use under an overcast sky
Outdoor use under an overcast sky
Outdoor use under an overcast sky

The viewing angle stability is very good in the Mix 4. You can easily see the contents even from very steep viewing angles. As typical for OLED panels, the colors can then be slightly shifted towards green or blue, but this has no effect on the readability.

Performance - Xiaomi Mix 4 with a Snapdragon 888+

The Mix 4 uses heavy hitters for the performance, since its Snapdragon 888+ 5G belongs to the fastest mobile Mobil SoCs. In addition, the high-end Adreno 660 graphics chip and 12 GB of LPDDR5-RAM also ensure that there are no performance bottlenecks. You can also assume this, if you buy a smaller storage version of the Mix 4, such as the model with 8 GB RAM and 128 GB storage.

In the synthetic benchmarks, there is only a small difference between the Xiaomi Mix 4 and other comparable smartphones. The Oppo Find X3 Pro (Snapdragon 888 5G) and the Samsung Galaxy S21 Ultra with its Samsung Exynos 2100 5G perform at almost the same level as the Snapdragon 888+. Other smartphones with the Snapdragon 888+ such as the Asus ROG Phone 5s and Nubia RedMagic 6S Pro do better in some of the benchmarks.

In the browser performance, the Mix 4 is able to get a small advantage, but this might also be due to the more current version of Google Chrome. However, the Mix 4 is unable to surpass the Apple iPhone 13 Pro.

Geekbench 5.3
64 Bit Single-Core Score (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
1129 Points ∼65%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
1749 Points ∼100% +55%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
1123 Points ∼64% -1%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
1106 Points ∼63% -2%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
1134 Points ∼65% 0%
Average Qualcomm Snapdragon 888 Plus 5G
  (1076 - 1170, n=5)
1140 Points ∼65% +1%
Average of class Smartphone
  (58 - 1755, n=261, last 2 years)
654 Points ∼37% -42%
64 Bit Multi-Core Score (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
3613 Points ∼75%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
4829 Points ∼100% +34%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
3535 Points ∼73% -2%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
3583 Points ∼74% -1%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
3629 Points ∼75% 0%
Average Qualcomm Snapdragon 888 Plus 5G
  (3286 - 3675, n=5)
3577 Points ∼74% -1%
Average of class Smartphone
  (248 - 4914, n=261, last 2 years)
2152 Points ∼45% -40%
Vulkan Score 5.3 (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
6211 Points ∼99%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
4415 Points ∼71% -29%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
6252 Points ∼100% +1%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
4124 Points ∼66% -34%
Average Qualcomm Snapdragon 888 Plus 5G
  (3646 - 6664, n=5)
5684 Points ∼91% -8%
Average of class Smartphone
  (72 - 8702, n=200, last 2 years)
2485 Points ∼40% -60%
OpenCL Score 5.3 (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
4848 Points ∼66%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
4656 Points ∼63% -4%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
7400 Points ∼100% +53%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
4662 Points ∼63% -4%
Average Qualcomm Snapdragon 888 Plus 5G
  (4158 - 4865, n=5)
4674 Points ∼63% -4%
Average of class Smartphone
  (255 - 9069, n=199, last 2 years)
2476 Points ∼33% -49%
PCMark for Android - Work 3.0 (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
14214 Points ∼89%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
14339 Points ∼90% +1%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
11705 Points ∼74% -18%
Average Qualcomm Snapdragon 888 Plus 5G
  (13127 - 18567, n=5)
15894 Points ∼100% +12%
Average of class Smartphone
  (4436 - 18567, n=133, last 2 years)
10130 Points ∼64% -29%
3DMark
2560x1440 Sling Shot OpenGL ES 3.0 Unlimited (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
9174 Points ∼86%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
7773 Points ∼73% -15%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
8768 Points ∼82% -4%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
9245 Points ∼87% +1%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
10642 Points ∼100% +16%
Average Qualcomm Snapdragon 888 Plus 5G
  (9174 - 11389, n=4)
10488 Points ∼99% +14%
Average of class Smartphone
  (149 - 13121, n=239, last 2 years)
4809 Points ∼45% -48%
2560x1440 Sling Shot OpenGL ES 3.0 Unlimited Graphics (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
13387 Points ∼42%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
31940 Points ∼100% +139%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
13647 Points ∼43% +2%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
13273 Points ∼42% -1%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
15592 Points ∼49% +16%
Average Qualcomm Snapdragon 888 Plus 5G
  (13387 - 17018, n=4)
15480 Points ∼48% +16%
Average of class Smartphone
  (122 - 31940, n=239, last 2 years)
6615 Points ∼21% -51%
2560x1440 Sling Shot OpenGL ES 3.0 Unlimited Physics (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
4365 Points ∼87%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
2130 Points ∼42% -51%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
3895 Points ∼77% -11%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
4483 Points ∼89% +3%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
5041 Points ∼100% +15%
Average Qualcomm Snapdragon 888 Plus 5G
  (4365 - 5293, n=4)
4928 Points ∼98% +13%
Average of class Smartphone
  (651 - 6394, n=237, last 2 years)
3202 Points ∼64% -27%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
7906 Points ∼83%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
5956 Points ∼62% -25%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
9540 Points ∼100% +21%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
8345 Points ∼87% +6%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
6110 Points ∼64% -23%
Average Qualcomm Snapdragon 888 Plus 5G
  (7906 - 9553, n=5)
8788 Points ∼92% +11%
Average of class Smartphone
  (91 - 11528, n=243, last 2 years)
3938 Points ∼41% -50%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Graphics (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
10256 Points ∼63%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
16221 Points ∼100% +58%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
12394 Points ∼76% +21%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
10794 Points ∼67% +5%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
10037 Points ∼62% -2%
Average Qualcomm Snapdragon 888 Plus 5G
  (10256 - 12752, n=5)
11550 Points ∼71% +13%
Average of class Smartphone
  (73 - 19364, n=243, last 2 years)
4844 Points ∼30% -53%
2560x1440 Sling Shot Extreme (ES 3.1) Unlimited Physics (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
4387 Points ∼83%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
1852 Points ∼35% -58%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
5283 Points ∼100% +20%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
4651 Points ∼88% +6%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
2579 Points ∼49% -41%
Average Qualcomm Snapdragon 888 Plus 5G
  (4387 - 5260, n=5)
4869 Points ∼92% +11%
Average of class Smartphone
  (635 - 5793, n=243, last 2 years)
3212 Points ∼61% -27%
Wild Life Score (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
4285 Points ∼46%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
9386 Points ∼100% +119%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
5657 Points ∼60% +32%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
5756 Points ∼61% +34%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
5851 Points ∼62% +37%
Average Qualcomm Snapdragon 888 Plus 5G
  (4285 - 5895, n=5)
5506 Points ∼59% +28%
Average of class Smartphone
  (216 - 10062, n=172, last 2 years)
3282 Points ∼35% -23%
Wild Life Unlimited Score (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
4274 Points ∼37%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
11700 Points ∼100% +174%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
5721 Points ∼49% +34%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
5873 Points ∼50% +37%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
5850 Points ∼50% +37%
Average Qualcomm Snapdragon 888 Plus 5G
  (4274 - 5875, n=5)
5497 Points ∼47% +29%
Average of class Smartphone
  (174 - 11700, n=170, last 2 years)
3370 Points ∼29% -21%
Wild Life Extreme (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
1161 Points ∼38%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
3059 Points ∼100% +163%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
1871 Points ∼61% +61%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
1497 Points ∼49% +29%
Average Qualcomm Snapdragon 888 Plus 5G
  (1161 - 1564, n=5)
1467 Points ∼48% +26%
Average of class Smartphone
  (102 - 3080, n=124, last 2 years)
1000 Points ∼33% -14%
Wild Life Extreme Unlimited (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
1147 Points ∼40%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
2864 Points ∼100% +150%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
1758 Points ∼61% +53%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
1423 Points ∼50% +24%
Average Qualcomm Snapdragon 888 Plus 5G
  (1147 - 1532, n=5)
1432 Points ∼50% +25%
Average of class Smartphone
  (101 - 2864, n=121, last 2 years)
978 Points ∼34% -15%
GFXBench (DX / GLBenchmark) 2.7
T-Rex Onscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
120 fps ∼100%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
60 fps ∼50% -50%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
60 fps ∼50% -50%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
104 fps ∼87% -13%
Average Qualcomm Snapdragon 888 Plus 5G
  (91 - 121, n=3)
110.7 fps ∼92% -8%
Average of class Smartphone
  (9.5 - 143, n=203, last 2 years)
67.4 fps ∼56% -44%
1920x1080 T-Rex Offscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
197 fps ∼47%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
417 fps ∼100% +112%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
230 fps ∼55% +17%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
154 fps ∼37% -22%
Average Qualcomm Snapdragon 888 Plus 5G
  (161 - 197, n=3)
184 fps ∼44% -7%
Average of class Smartphone
  (6 - 428, n=203, last 2 years)
133.8 fps ∼32% -32%
GFXBench 3.0
on screen Manhattan Onscreen OGL (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
113 fps ∼100%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
60 fps ∼53% -47%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
55 fps ∼49% -51%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
69 fps ∼61% -39%
Average Qualcomm Snapdragon 888 Plus 5G
  (81 - 113, n=3)
94.3 fps ∼83% -17%
Average of class Smartphone
  (4.5 - 121, n=202, last 2 years)
54.6 fps ∼48% -52%
1920x1080 1080p Manhattan Offscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
134 fps ∼59%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
229 fps ∼100% +71%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
127 fps ∼55% -5%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
117 fps ∼51% -13%
Average Qualcomm Snapdragon 888 Plus 5G
  (92 - 134, n=3)
118.3 fps ∼52% -12%
Average of class Smartphone
  (2.4 - 251, n=203, last 2 years)
76.9 fps ∼34% -43%
GFXBench 3.1
on screen Manhattan ES 3.1 Onscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
83 fps ∼100%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
60 fps ∼72% -28%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
36 fps ∼43% -57%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
51 fps ∼61% -39%
Average Qualcomm Snapdragon 888 Plus 5G
  (54 - 83, n=3)
70.7 fps ∼85% -15%
Average of class Smartphone
  (3.1 - 121, n=202, last 2 years)
42.1 fps ∼51% -49%
1920x1080 Manhattan ES 3.1 Offscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
88 fps ∼58%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
151 fps ∼100% +72%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
93 fps ∼62% +6%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
74 fps ∼49% -16%
Average Qualcomm Snapdragon 888 Plus 5G
  (62 - 88, n=3)
79.3 fps ∼53% -10%
Average of class Smartphone
  (1.4 - 169, n=203, last 2 years)
52 fps ∼34% -41%
GFXBench
on screen Car Chase Onscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
52 fps ∼87%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
60 fps ∼100% +15%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
28 fps ∼47% -46%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
30 fps ∼50% -42%
Average Qualcomm Snapdragon 888 Plus 5G
  (35 - 52, n=3)
43 fps ∼72% -17%
Average of class Smartphone
  (3.3 - 81, n=202, last 2 years)
26.5 fps ∼44% -49%
1920x1080 Car Chase Offscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
55 fps ∼58%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
95 fps ∼100% +73%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
55 fps ∼58% 0%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
58 fps ∼61% +5%
Average Qualcomm Snapdragon 888 Plus 5G
  (42 - 55, n=3)
49.3 fps ∼52% -10%
Average of class Smartphone
  (1.8 - 96.6, n=202, last 2 years)
31.5 fps ∼33% -43%
on screen Aztec Ruins Normal Tier Onscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
61 fps ∼100%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
60 fps ∼98% -2%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
38 fps ∼62% -38%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
37 fps ∼61% -39%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
53 fps ∼87% -13%
Average Qualcomm Snapdragon 888 Plus 5G
  (42 - 65, n=5)
56.6 fps ∼93% -7%
Average of class Smartphone
  (1.5 - 98, n=258, last 2 years)
27.9 fps ∼46% -54%
1920x1080 Aztec Ruins Normal Tier Offscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
65 fps ∼55%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
119 fps ∼100% +83%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
72 fps ∼61% +11%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
69 fps ∼58% +6%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
66 fps ∼55% +2%
Average Qualcomm Snapdragon 888 Plus 5G
  (39 - 81, n=5)
65.2 fps ∼55% 0%
Average of class Smartphone
  (2 - 257, n=259, last 2 years)
33.5 fps ∼28% -48%
on screen Aztec Ruins High Tier Onscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
37 fps ∼62%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
60 fps ∼100% +62%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
25 fps ∼42% -32%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
26 fps ∼43% -30%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
37 fps ∼62% 0%
Average Qualcomm Snapdragon 888 Plus 5G
  (31 - 41, n=5)
36.6 fps ∼61% -1%
Average of class Smartphone
  (2.1 - 69, n=259, last 2 years)
19.1 fps ∼32% -48%
2560x1440 Aztec Ruins High Tier Offscreen (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
24 fps ∼62%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
39 fps ∼100% +63%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
28 fps ∼72% +17%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
28 fps ∼72% +17%
Sony Xperia 1 III
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
27 fps ∼69% +13%
Average Qualcomm Snapdragon 888 Plus 5G
  (19 - 30, n=5)
25 fps ∼64% +4%
Average of class Smartphone
  (0.7 - 101, n=259, last 2 years)
12.9 fps ∼33% -46%
Antutu v9 - Total Score (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
815115 Points ∼100%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
800608 Points ∼98% -2%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
749520 Points ∼92% -8%
Average Qualcomm Snapdragon 888 Plus 5G
  (794271 - 815115, n=2)
804693 Points ∼99% -1%
Average of class Smartphone
  (111952 - 1041980, n=102, last 2 years)
550205 Points ∼68% -32%
AnTuTu v8 - Total Score (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
712952 Points ∼100%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
673630 Points ∼94% -6%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
633158 Points ∼89% -11%
Average Qualcomm Snapdragon 888 Plus 5G
  (695964 - 725649, n=3)
711522 Points ∼100% 0%
Average of class Smartphone
  (77514 - 727247, n=142, last 2 years)
359023 Points ∼50% -50%
AImark - Score v2.x (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
28727 Points ∼12%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
105536 Points ∼44% +267%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
241222 Points ∼100% +740%
Average Qualcomm Snapdragon 888 Plus 5G
  (27321 - 286905, n=3)
114318 Points ∼47% +298%
Average of class Smartphone
  (4293 - 286905, n=121, last 2 years)
63547 Points ∼26% +121%
BaseMark OS II
Overall (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
6412 Points ∼94%
Apple iPhone 13 Pro
Apple A15 Bionic, A15 GPU 5-Core, 6144
0 Points ∼0% -100%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
6822 Points ∼100% +6%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
6247 Points ∼92% -3%
Average Qualcomm Snapdragon 888 Plus 5G
  (5711 - 7123, n=3)
6415 Points ∼94% 0%
Average of class Smartphone
  (895 - 8124, n=179, last 2 years)
4143 Points ∼61% -35%
System (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
10746 Points ∼94%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
11438 Points ∼100% +6%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
10936 Points ∼96% +2%
Average Qualcomm Snapdragon 888 Plus 5G
  (8546 - 11096, n=3)
10129 Points ∼89% -6%
Average of class Smartphone
  (1542 - 19657, n=179, last 2 years)
7353 Points ∼64% -32%
Memory (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
7461 Points ∼91%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
8220 Points ∼100% +10%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
6588 Points ∼80% -12%
Average Qualcomm Snapdragon 888 Plus 5G
  (5648 - 7941, n=3)
7017 Points ∼85% -6%
Average of class Smartphone
  (1012 - 9044, n=179, last 2 years)
4780 Points ∼58% -36%
Graphics (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
11374 Points ∼79%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
14211 Points ∼99% +25%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
14362 Points ∼100% +26%
Average Qualcomm Snapdragon 888 Plus 5G
  (11374 - 15524, n=3)
13588 Points ∼95% +19%
Average of class Smartphone
  (478 - 25642, n=179, last 2 years)
7045 Points ∼49% -38%
Web (sort by value)
Xiaomi Mix 4
Qualcomm Snapdragon 888 Plus 5G, Adreno 660, 12288
1853 Points ∼100%
Oppo Find X3 Pro
Qualcomm Snapdragon 888 5G, Adreno 660, 12288
1621 Points ∼87% -13%
Samsung Galaxy S21 Ultra
Samsung Exynos 2100 5G, Mali-G78 MP14, 12288
1471 Points ∼79% -21%
Average Qualcomm Snapdragon 888 Plus 5G
  (1665 - 1882, n=3)
1800 Points ∼97% -3%
Average of class Smartphone
  (718 - 2392, n=179, last 2 years)
1374 Points ∼74% -26%


Jetstream 2 - Total Score
Apple iPhone 13 Pro (Safari 15)
181.6 Points ∼100% +45%
Xiaomi Mix 4 (Chrome 96.0.4664.45)
125.4 Points ∼69%
Average Qualcomm Snapdragon 888 Plus 5G (75.9 - 125.4, n=3)
97.8 Points ∼54% -22%
Samsung Galaxy S21 Ultra (Chrome 88)
76.6 Points ∼42% -39%
Average of class Smartphone (12.4 - 182.6, n=176, last 2 years)
60.1 Points ∼33% -52%
JetStream 1.1 - Total Score
Apple iPhone 13 Pro (Safari 15)
413.7 Points ∼100% +90%
Xiaomi Mix 4 (Chrome 96.0.4664.45)
218.1 Points ∼53%
Average Qualcomm Snapdragon 888 Plus 5G (108.5 - 218, n=3)
159.8 Points ∼39% -27%
Oppo Find X3 Pro (Chrome 89)
139.4 Points ∼34% -36%
Samsung Galaxy S21 Ultra (Chrome 88)
127.3 Points ∼31% -42%
Average of class Smartphone (10.8 - 414, n=184, last 2 years)
111.5 Points ∼27% -49%
Speedometer 2.0 - Result
Apple iPhone 13 Pro (Safari 15)
243 runs/min ∼100% +113%
Xiaomi Mix 4 (Chrome 96.0.4664.45)
114 runs/min ∼47%
Average Qualcomm Snapdragon 888 Plus 5G (79.8 - 114, n=3)
91.5 runs/min ∼38% -20%
Samsung Galaxy S21 Ultra (Chrome 88)
84.1 runs/min ∼35% -26%
Average of class Smartphone (9 - 244, n=162, last 2 years)
59.4 runs/min ∼24% -48%
WebXPRT 3 - ---
Apple iPhone 13 Pro (Safari 15)
248 Points ∼100% +50%
Xiaomi Mix 4 (Chrome 96.0.4664.45)
165 Points ∼67%
Average Qualcomm Snapdragon 888 Plus 5G (120 - 165, n=3)
144 Points ∼58% -13%
Samsung Galaxy S21 Ultra (Chrome 88)
132 Points ∼53% -20%
Oppo Find X3 Pro (Chrome 89)
129 Points ∼52% -22%
Average of class Smartphone (20 - 265, n=188, last 2 years)
90.1 Points ∼36% -45%
Octane V2 - Total Score
Apple iPhone 13 Pro (Safari 15)
64222 Points ∼100% +31%
Xiaomi Mix 4 (Chrome 96.0.4664.45)
49046 Points ∼76%
Average Qualcomm Snapdragon 888 Plus 5G (28695 - 49046, n=3)
38501 Points ∼60% -22%
Oppo Find X3 Pro (Chrome 89)
27914 Points ∼43% -43%
Samsung Galaxy S21 Ultra (Chrome 88)
27275 Points ∼42% -44%
Average of class Smartphone (3526 - 65969, n=192, last 2 years)
22284 Points ∼35% -55%
Mozilla Kraken 1.1 - Total Score
Average of class Smartphone (414 - 15230, n=194, last 2 years)
3274 ms * ∼100% -185%
Samsung Galaxy S21 Ultra (Chrome 88)
1786 ms * ∼55% -55%
Oppo Find X3 Pro (Chrome 89)
1646 ms * ∼50% -43%
Average Qualcomm Snapdragon 888 Plus 5G (1149 - 1443, n=3)
1317 ms * ∼40% -15%
Xiaomi Mix 4 (Chrome 96.0.4664.45)
1149 ms * ∼35%
Apple iPhone 13 Pro (Safari 15)
413.6 ms * ∼13% +64%

* ... smaller is better

The UFS-3.1 storage of the Xiaomi Mix 4 achieves read and write speeds that are very high throughout. However, the Samsung Galaxy S21 Ultra is still a tad faster.

Xiaomi Mix 4Oppo Find X3 ProSamsung Galaxy S21 UltraSony Xperia 1 IIIAverage 512 GB UFS 3.1 FlashAverage of class Smartphone
AndroBench 3-5
0%
15%
6%
5%
-44%
Sequential Read 256KB
1938
1779
-8%
1710
-12%
1948
1%
1860 ?(1710 - 1999, n=11)
-4%
897 ?(45.6 - 2037, n=258, last 2 years)
-54%
Sequential Write 256KB
751
759
1%
1077
43%
742
-1%
799 ?(575 - 1275, n=11)
6%
435 ?(11.9 - 1465, n=258, last 2 years)
-42%
Random Read 4KB
242.1
273.3
13%
316.7
31%
267.8
11%
274 ?(208 - 303, n=11)
13%
159.3 ?(13.5 - 325, n=258, last 2 years)
-34%
Random Write 4KB
284.2
267.1
-6%
279.5
-2%
316.8
11%
295 ?(221 - 413, n=11)
4%
151.6 ?(269 - 449, n=259, last 2 years)
-47%

Games - No automatic advantage with the 120-Hz screen

The 120-Hz display, an abundance of performance, and dual speakers make the Xiaomi Mix 4 basically a good choice for gaming. While games also run smoothly at high detail levels, it is not always guaranteed that they will run at up to 120 frames per second. If we take PUBG Mobile as an example, more than 30 FPS are not possible in the relatively moderate HD/High setting, even if the refresh rate is set to 120 Hz.

We determine the frame rates with Gamebench. Unfortunately, games other than PUBG Mobile could not be tested with the tool.

PUBG Mobile
PUBG Mobile
051015202530Tooltip
; 1.7.0: Ø30 (29-31)

Emissions - Hybrid dual speakers in the Mix 4

Temperature

The Xiaomi Mix 4 remains cool during operation, and the surface only warms up to a maximum of 30.4 °C (87 °F) even after one hour of the stress test.

The smartphone also keeps its internal temperatures well under control. In the 3DMark Wild Life stress test, the Mix 4 achieves a result close to the 100% mark, and the benchmark result almost always remains constant during the whole duration of the test. We would have also liked to analyze the GFXBench stress tests, but the app always crashed before showing the results.

Max. Load
 31 °C
88 F
31 °C
88 F
29.4 °C
85 F
 
 30.8 °C
87 F
30.6 °C
87 F
28.9 °C
84 F
 
 30.4 °C
87 F
30.5 °C
87 F
28 °C
82 F
 
Maximum: 31 °C = 88 F
Average: 30.1 °C = 86 F
29.2 °C
85 F
30.2 °C
86 F
30.2 °C
86 F
28.4 °C
83 F
29 °C
84 F
30.4 °C
87 F
26.7 °C
80 F
27.8 °C
82 F
30.4 °C
87 F
Maximum: 30.4 °C = 87 F
Average: 29.1 °C = 84 F
Power Supply (max.)  24.6 °C = 76 F | Room Temperature 21.5 °C = 71 F | Fluke t3000FC (calibrated) & Voltcraft IR-260
(+) The average temperature for the upper side under maximal load is 30.1 °C / 86 F, compared to the average of 32.8 °C / 91 F for the devices in the class Smartphone.
(+) The maximum temperature on the upper side is 31 °C / 88 F, compared to the average of 35.1 °C / 95 F, ranging from 22 to 52.9 °C for the class Smartphone.
(+) The bottom heats up to a maximum of 30.4 °C / 87 F, compared to the average of 33.8 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 26.6 °C / 80 F, compared to the device average of 32.8 °C / 91 F.

3DMark Wild Life Stress Test

3DMark
Wild Life Stress Test Stability
Xiaomi Mix 4
Adreno 660, SD 888+ 5G, 512 GB UFS 3.1 Flash
98.9 (25.5min) % ∼100%
Wild Life Extreme Stress Test
Xiaomi Mix 4
Adreno 660, SD 888+ 5G, 512 GB UFS 3.1 Flash
99.2 (7.17min) % ∼100%
0510152025Tooltip
; Wild Life Extreme Stress Test; 1.0.5.1: Ø7.19 (7.17-7.23)
; Wild Life Stress Test Stability; 0.0.0.0: Ø25.6 (25.5-25.8)

Speaker

Looking at the exterior of the Mix 4, it appears to only have a single speaker. However, in reality you get a stereo sound, since the earpiece that sits underneath the display is used as a second speaker. With this, the Mix 4 produces a sound that is poor in bass but very clear and balanced overall. It is only slightly distorted at maximum volume. You can connect external audio devices via Bluetooth 5.2 or a USB-C adapter.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2031.836.82524303116.130.34027.628.55032.333.16323.427.1802227.51002227.51252130.916017.945.720013.348.125015.250.931513.25840011.557.950012.266.963012.372.180013.374.4100014.576.1125012.275.1160011.276.2200011.778.3250012.179.4315012.781.7400013.678.9500013.174.9630013.672.1800013.169.51000013.667.11250013.663.71600013.558.5SPL2588.8N0.672.6median 13.3median 69.5Delta1.210.130.825.822.62619.223.721.424.132.83618.624.218.123.715.427.710.739.41756.114.954.313.25812.562.311.565.710.566.89.968.311.971.110.676.213.676.81471.212.972.511.773.512.978.913.180.113.377.113.873.21479.513.574.414.272.51763.425880.675median 13.2median 71.21.27.4hearing rangehide median Pink NoiseXiaomi Mix 4Samsung Galaxy S21 Ultra
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Xiaomi Mix 4 audio analysis

(+) | speakers can play relatively loud (88.8 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 26% lower than median
(±) | linearity of bass is average (9% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 6.2% higher than median
(+) | mids are linear (5% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6% higher than median
(+) | highs are linear (4.6% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (20.4% difference to median)
Compared to same class
» 26% of all tested devices in this class were better, 11% similar, 64% worse
» The best had a delta of 12%, average was 23%, worst was 65%
Compared to all devices tested
» 51% of all tested devices were better, 9% similar, 40% worse
» The best had a delta of 3%, average was 20%, worst was 65%

Samsung Galaxy S21 Ultra audio analysis

(+) | speakers can play relatively loud (88 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 21.5% lower than median
(±) | linearity of bass is average (12.1% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 3.1% away from median
(+) | mids are linear (4.6% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.5% higher than median
(+) | highs are linear (6.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (15.1% difference to median)
Compared to same class
» 2% of all tested devices in this class were better, 1% similar, 97% worse
» The best had a delta of 12%, average was 23%, worst was 65%
Compared to all devices tested
» 18% of all tested devices were better, 5% similar, 77% worse
» The best had a delta of 3%, average was 20%, worst was 65%

Battery Life - Fully recharged after 25 minutes

Power Consumption

The Xiaomi Mix 4 can be recharged using the included 120-Watt charger. With a weight of 185 gram (~6.5 oz), it is almost as heavy as the smartphone. However, not only the weight is impressive, but the charging power as well.

During our test, the empty battery is recharged completely up to 100% after only just 36 minutes. If you activate the "Boost Charging Speed" option, it is even faster, and the charging time is then reduced to 25 minutes, reaching 50% of charge already after barely 12 minutes and 80% after 19 minutes. When the charging booster is activated, the smartphone heats up noticeably, but it never gets uncomfortably warm.

We did not notice any conspicuous behavior during the charging of the Xiaomi Mix 4.

Power Consumption
Off / Standbydarklight 0.07 / 0.09 Watt
Idledarkmidlight 0.12 / 1.04 / 1.23 Watt
Load midlight 3.04 / 7.84 Watt
 color bar
Key: min: dark, med: mid, max: light        Metrahit Energy
Currently we use the Metrahit Energy, a professional single phase power quality and energy measurement digital multimeter, for our measurements. Find out more about it here. All of our test methods can be found here.
Xiaomi Mix 4
4500 mAh
Apple iPhone 13 Pro
3095 mAh
Oppo Find X3 Pro
4500 mAh
Samsung Galaxy S21 Ultra
5000 mAh
Average Qualcomm Snapdragon 888 Plus 5G
 
Average of class Smartphone
 
Power Consumption
-72%
-178%
-189%
-96%
-165%
Idle Minimum *
0.12
0.51
-325%
0.93
-675%
1.06
-783%
0.59 ?(0.12 - 1.05, n=3)
-392%
0.916 ?(0.12 - 2.5, n=204, last 2 years)
-663%
Idle Average *
1.04
1.54
-48%
1.54
-48%
1.19
-14%
1.23 ?(0.9 - 1.75, n=3)
-18%
1.7 ?(0.65 - 3.6, n=204, last 2 years)
-63%
Idle Maximum *
1.23
1.57
-28%
1.69
-37%
1.2
2%
1.503 ?(1.23 - 1.78, n=3)
-22%
1.928 ?(0.69 - 4, n=204, last 2 years)
-57%
Load Average *
3.04
3.06
-1%
6.38
-110%
6.46
-113%
4.45 ?(3.04 - 7, n=3)
-46%
4.47 ?(2.1 - 7.74, n=204, last 2 years)
-47%
Load Maximum *
7.84
4.59
41%
9.58
-22%
10.76
-37%
7.81 ?(7.18 - 8.4, n=3)
-0%
7.34 ?(3.56 - 11.9, n=204, last 2 years)
6%

* ... smaller is better

Power Consumption: Geekbench (150 cd/m²)

012345678910Tooltip
Xiaomi Mix 4 Qualcomm Snapdragon 888 Plus 5G: Ø4.68 (0.1307-10.4)
Apple iPhone 13 Pro Apple A15 Bionic: Ø4.98 (0.783-10.2)

Power Consumption: GFXBench (150 cd/m²)

0123456789Tooltip
Xiaomi Mix 4 Qualcomm Snapdragon 888 Plus 5G; 1920x1080 Aztec Ruins Normal Offscreen: Ø6.33 (3.57-7.13)
Apple iPhone 13 Pro Apple A15 Bionic; 1920x1080 Aztec Ruins Normal Offscreen: Ø7.84 (3.75-9.01)
Xiaomi Mix 4 Qualcomm Snapdragon 888 Plus 5G; Idle 1min: Ø0.943 (0.827-1.677)
Apple iPhone 13 Pro Apple A15 Bionic; Idle 1min: Ø0.664 (0.641-0.717)

Battery Life

With more than 15 hours of web surfing and more than 16 hours of playing videos, the Mix 4 achieves a very good battery life. Except for the Apple iPhone 13 Pro endurance champion, none of the high-end competitors is able to keep up with the Xiaomi.

As always, we ran the battery tests with the brightness adjusted to 150 cd/m², but we also activated the 120-Hz screen refresh rate. The battery life should be even better with a refresh rate of 60 Hz.

Battery Runtime
Idle (without WLAN, min brightness)
41h 59min
WiFi Websurfing
15h 25min
Big Buck Bunny H.264 1080p
16h 45min
Load (maximum brightness)
4h 26min
Xiaomi Mix 4
4500 mAh
Apple iPhone 13 Pro
3095 mAh
Oppo Find X3 Pro
4500 mAh
Samsung Galaxy S21 Ultra
5000 mAh
Sony Xperia 1 III
4500 mAh
Battery Runtime
21%
-18%
-6%
-42%
Reader / Idle
2519
2614
4%
1408
-44%
H.264
1005
1493
49%
1310
30%
WiFi v1.3
925
993
7%
757
-18%
702
-24%
534
-42%
Load
266
333
25%
304
14%

Pros

+ high-quality glass and ceramic case
+ under-display camera
+ fast WLAN
+ very fast SoC
+ bright AMOLED panel at 120 Hz
+ good stereo sound
+ 120-Watt charger
+ extremely short recharge times
+ long battery life

Cons

- selfie camera is only average
- no audio port
- no microSD slot
- Snapdragon 888+ is faster in other smartphones

Verdict on the Xiaomi Mix 4

Testing the Xiaomi Mix 4. Test unit provided by TradingShenzhen.
Testing the Xiaomi Mix 4. Test unit provided by TradingShenzhen.

With the Mix 4, Xiaomi offers a very good high-end smartphone. In our test, it impresses with a very high system performance, a bright AMOLED display with 120 Hz, a solid 108-MP camera, and a well-equipped communication module with fast WiFi 6E and 5G with dual-SIM. With its high-quality glass/ceramics unibody, the Mix 4 also plays in the first league in terms of its visual appearance.

Two equipment characteristics also make the smartphone special in the high-end range. First, there is the under-display camera, which makes the Mix 4 attractive to all users who don't like a camera notch. The 20-MP camera that is hidden under the display does a good job, but its quality is not quite as high as that of regular selfie cameras.

The Xiaomi Mix 4, which is currently only available as an import, is a powerful high-end smartphone that distinguishes itself from the competitors with its under-display camera and the extremely fast charging.

The second particularity is the extremely fast charging using the 120-Watt charger that is also included with the Xiaomi 11T Pro. Using this, the Mix 4 is completely recharged to 100% after only 25 minutes in our test. With such a crazy charging speed, you neither need to recharge the phone overnight, nor wait for a long time until the battery has sufficient charge for everyday usage.

There are only few disadvantages in the Mix 4. As already mentioned, the quality of the selfie camera could be better, but the current level of the under-display technology apparently doesn't allow for anything more at this point. The missing audio port can be replaced via USB-C adapter. But due to the lack of a microSD slot, you cannot expand the storage.

Alternatives to the Xiaomi Mix 4 are the Oppo Find X3 Pro, the Samsung Galaxy S21 Ultra, and the Xiaomi 11T Pro, for example.

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Price and Availability

The Xiaomi Mix 4 is currently only available via importers such as TradingShenzhen or Giztop starting from $699 for the model with 8 GB RAM and 128 GB storage, and $919 for the top model (12/512GB).

Xiaomi Mix 4 - 12/02/2021 v7
Manuel Masiero

Chassis
88%
Keyboard
65 / 75 → 87%
Pointing Device
93%