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Xiaomi Poco C40 smartphone review – Slow phone with long battery life

For those who enjoy great battery life. Xiaomi's sub-brand Poco is once again trying to penetrate the entry-level market with a phone that features a huge battery and an exotic processor. The Poco C40 even looks great to boot. So does it get our wholehearted recommendation? Well...
Xiaomi Poco C40

Xiaomi's Poco line-up is already known for its budget devices that offer great value for money. And the C series has some of the cheapest phones within the sub-brand.

There have been only a few C-series phones up to this point. The Poco C40 has now also made it to Europe: priced significantly below 200 Euro (US$200), the smartphone comes with an exotic SoC that reveals the manufacturer behind it only upon a closer look. The large battery and relatively fast charging technology appear quite impressive at first glance.

In this review, we will examine the all the facets of the phone and find out whether it is suitable for everyday use.

Xiaomi Poco C40 (Poco C Series)
Processor
JLQ JR510 8 x 1.5 - 2 GHz, Cortex-A53
Graphics adapter
Memory
3 GB 
Display
6.71 inch 20.6:9, 1650 x 720 pixel 268 PPI, capacitive touchscreen, IPS, glossy: yes, 60 Hz
Storage
32 GB eMMC Flash, 32 GB 
, 20 GB free
Connections
1 USB 2.0, USB-C Power Delivery (PD), Audio Connections: 3.5mm, Card Reader: microSD (dedicated, up to 1TB), 1 Fingerprint Reader, Brightness Sensor, Sensors: accelerometer, proximity sensor
Networking
802.11 a/b/g/n/ac (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5), Bluetooth 5.0, 2G (850/​900/​1800/​1900), 3G (B1/​B2/​B4/​B5/​B8), 4G (B1/​B2/​B3/​B4/​B5/​B7/​B8/​B20/​B28/​B38/​B40/​B41), Dual SIM, LTE, GPS
Size
height x width x depth (in mm): 9.2 x 169.6 x 76.6 ( = 0.36 x 6.68 x 3.02 in)
Battery
6000 mAh Lithium-Polymer, 18 watt charging
Operating System
Android 11
Camera
Primary Camera: 13 MPix f/​2.2, phase-detection AF, LED flash, videos @1080p/​30fps (camera 1); 2.0MP, f/​2.4, depth of field (camera 2)
Secondary Camera: 5 MPix f/​2.2, videos @1080p/​30fps
Additional features
Speakers: mono speaker, charger, USB cable, SIM tool, 24 Months Warranty, FM radio, IP52-certfied, SAR values: 0.599 W/kg (head), 0.994 W/kg (body), fanless
Weight
204 g ( = 7.2 oz / 0.45 pounds) ( = 0 oz / 0 pounds)
Price
170 Euro
Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

 

Comparison with possible competitors

Rating
Date
Model
Weight
Drive
Size
Resolution
Best Price
74.4 %
11/2022
Xiaomi Poco C40
JR510, Mali-G52 MP1
204 g32 GB eMMC Flash6.71"1650x720
76.6 %
07/2022
Xiaomi Redmi 10C
SD 680, Adreno 610
190 g64 GB UFS 2.2 Flash6.71"1650x720
74.7 %
10/2022
Samsung Galaxy A04s
Exynos 850, Mali-G52 MP1
195 g32 GB eMMC Flash6.50"1600x720
75.1 %
05/2022
Motorola Moto G22
Helio G37, PowerVR GE8320
185 g64 GB eMMC Flash6.50"1600x720
78.5 %
03/2022
Nokia G21
T606, Mali-G57 MP1
190 g64 GB eMMC Flash6.50"1600x720

Case – Leatherette and IP certification

Colour options for the Poco C40
Colour options for the Poco C40

The Poco C40 is available in three colours: our review unit is Power Black, but you can also get the phone in Coral Green and Poco Yellow if you like more striking colours.

The rear of the phone has a leatherette texture that gives the otherwise pretty basic plastic construction a more premium feel. The camera module and fingerprint sensor are located in a large, black unit that occupies the top quarter of the phone's back and refracts light.

The chassis exhibits a little bit of flex in many places but feels quite sturdy as a whole. There are clearly noticeable gaps between materials, but the joints are clean. Due to its large battery, the Poco C40 is slightly heavier than other phones in this price range.

The manufacturer claims that the phone has IP52 certification, meaning that the device is only protected against dust and water splashes and that you shouldn't immerse the phone in water.

Xiaomi Poco C40
Xiaomi Poco C40
Xiaomi Poco C40
Xiaomi Poco C40
Xiaomi Poco C40

Size comparison

169.6 mm / 6.68 inch 76.6 mm / 3.02 inch 9.2 mm / 0.3622 inch 204 g0.4497 lbs169.6 mm / 6.68 inch 76.6 mm / 3.02 inch 8.3 mm / 0.3268 inch 190 g0.4189 lbs164.7 mm / 6.48 inch 76.7 mm / 3.02 inch 9.1 mm / 0.3583 inch 195 g0.4299 lbs164.6 mm / 6.48 inch 75.9 mm / 2.99 inch 8.5 mm / 0.3346 inch 190 g0.4189 lbs164 mm / 6.46 inch 75 mm / 2.95 inch 8.5 mm / 0.3346 inch 185 g0.4079 lbs148 mm / 5.83 inch 105 mm / 4.13 inch 1 mm / 0.03937 inch 1.5 g0.00331 lbs

Specifications – No NFC support, unfortunately

The Poco C40 is available in two storage & RAM configurations (RRP is also provided below):

  • 32 GB storage / 3 GB RAM: 169.90 Euro (US$149)
  • 64 GB storage / 4 GB RAM: 189.90 Euro (US$179)

As with many budget phones, the C40 still sports a 3.5 mm audio jack for plugging in headphones or other audio devices. It is also nice to see Xiaomi opting to give the device a USB-C port and thus doing its part in the standardisation of ports; not all manufacturers have made the switch to USB-C in the budget segment. 

If you enjoy paying with your phone, you will be left wanting with the Poco C40. The device lacks an NFC module and therefore can't be used with mobile payment services.

Left: SIM slot
Left: SIM slot
Right: Power button, volume rocker
Right: Power button, volume rocker
Top: 3.5 mm audio jack
Top: 3.5 mm audio jack
Bottom: Microphone, USB-C port, speaker
Bottom: Microphone, USB-C port, speaker

microSD card reader

We used our reference microSD card, the Angelbird V60, to test the transfer rates of the card reader, which has its own holder separate from the two SIM slots.

The card reader has very slow transfer speeds according to our manual file copy test as well as the CPDT benchmark, though it is worth noting that the reader delivered slightly better speeds in the CPDT benchmark.

SD Card Reader - average JPG Copy Test (av. of 3 runs)
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash (Angelbird V60)
40.7 MB/s ∼100% +142%
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash (Angelbird V60)
34.9 MB/s ∼86% +108%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash (Angelbird V60)
24.3 MB/s ∼60% +45%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash (Angelbird V60)
20.6 MB/s ∼51% +23%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash (Angelbird V60)
16.8 MB/s ∼41%

Cross Platform Disk Test (CPDT)

05101520253035404550556065707580Tooltip
Xiaomi Poco C40 Mali-G52 MP1, JR510, 32 GB eMMC Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø34.6 (25.1-45)
Xiaomi Redmi 10C Adreno 610, SD 680, 64 GB UFS 2.2 Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø38.2 (26.4-46.1)
Samsung Galaxy A04s Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø21.8 (14.4-35.4)
Motorola Moto G22 PowerVR GE8320, Helio G37, 64 GB eMMC Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø35.9 (20.7-46.1)
Nokia G21 Mali-G57 MP1, T606, 64 GB eMMC Flash; SDCard Sequential Write 0.5 GB; Angelbird V60: Ø30.5 (12.9-38.6)
Xiaomi Poco C40 Mali-G52 MP1, JR510, 32 GB eMMC Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø68.2 (48.1-73.5)
Xiaomi Redmi 10C Adreno 610, SD 680, 64 GB UFS 2.2 Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø78.7 (28.6-82.6)
Samsung Galaxy A04s Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø46.5 (19.4-55.2)
Motorola Moto G22 PowerVR GE8320, Helio G37, 64 GB eMMC Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø72.5 (27.9-75.8)
Nokia G21 Mali-G57 MP1, T606, 64 GB eMMC Flash; SDCard Sequential Read 0.5 GB; Angelbird V60: Ø75.5 (39.6-81.6)

Software – Tons of preinstalled apps

The smartphone comes preinstalled with Xiaomi's MIUI 13. Despite what the name might suggest, the operating system is only based on Android 11. It is difficult to find accurate information on how long the phone will be supported with updates. Nonetheless, based on experience, even budget Poco phones will receive two years of security updates and at least one new operating system version.

The manufacturer has greatly modified Android and preinstalled a ton of software. This includes not just Xiaomi apps that offer extra functions, but also third-party advertising apps that take up even more of the already small storage.

Xiaomi Poco C40 software
Xiaomi Poco C40 software
Xiaomi Poco C40 software
Xiaomi Poco C40 software
Xiaomi Poco C40 software
Xiaomi Poco C40 software

Connectivity – Wi-Fi 5 is standard

Similar to most phones in this class, the Poco C40 supports up to Wi-Fi 5. The phone managed to hit a good transmit speed of roughly 350 Mbit/s during our Wi-Fi test, which was performed using our reference reference router (Asus ROG Rapture AXE11000). However, the receive speed decreased after a short while and ended up at a lower value.

The Poco C40 is a 4G phone and thus can't communicate with the faster 5G networks. The range of frequency bands supported is mostly adequate for use in Europe. Nonetheless, before travelling elsewhere with the phone, you should check whether it is able to work with the mobile Internet in the destination country.

Networking
iperf3 receive AXE11000
Average of class Smartphone
  (44.3 - 1736, n=121, last 2 years)
601 MBit/s ∼100% +121%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
326 (305min - 332max) MBit/s ∼54% +20%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
318 (308min - 327max) MBit/s ∼53% +17%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
299 (224min - 315max) MBit/s ∼50% +10%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
272 (225min - 331max) MBit/s ∼45%
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
222 (194min - 242max) MBit/s ∼37% -18%
iperf3 transmit AXE11000
Average of class Smartphone
  (57.7 - 1710, n=123, last 2 years)
648 MBit/s ∼100% +78%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
370 (351min - 376max) MBit/s ∼57% +2%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
364 (299min - 378max) MBit/s ∼56%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
339 (328min - 362max) MBit/s ∼52% -7%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
332 (300min - 346max) MBit/s ∼51% -9%
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
315 (269min - 336max) MBit/s ∼49% -13%
020406080100120140160180200220240260280300320340360Tooltip
Xiaomi Poco C40; iperf3 receive AXE11000; iperf 3.1.3: Ø272 (225-331)
Xiaomi Poco C40; iperf3 transmit AXE11000; iperf 3.1.3: Ø364 (299-378)
Outdoor GPS test
Outdoor GPS test
Available satellite networks
Available satellite networks

The location-tracking chip in the Poco C40 supports the following networks: GPS, Galileo, GLONASS and Beidou. However, the phone doesn't have an SBAS support system, which can ensure higher accuracy. We went outdoors with the review unit to see how fast and accurate the phone could determine our location: the GPS Test app indicated an accuracy of 3 m after a short while, which is a typical result for most phones.

To get an even better idea of how good the location tracking is, we hopped on our bike and went on a ride, bringing along the Garmin Venu 2 as a comparison device.

The Poco C40 exhibited some weaknesses during our test. At one point, we had to turn around suddenly due to a construction site. The location tracking system completely ignored this and instead simply drew a straight line through several plots of land to the next location point. The phone also ended the location tracking too early.

Overall, whilst the positioning was fairly accurate, given the errors mentioned, you should carefully consider whether you want to rely on the Poco C40 as a navigation device.

Location tracking Garmin Venu 2 – overview
Location tracking Garmin Venu 2 – overview
Location tracking Garmin Venu 2 – turning point
Location tracking Garmin Venu 2 – turning point
Location tracking Garmin Venu 2 – bridge
Location tracking Garmin Venu 2 – bridge
Location tracking Xiaomi Poco C40 – overview
Location tracking Xiaomi Poco C40 – overview
Location tracking Xiaomi Poco C40 – turning point
Location tracking Xiaomi Poco C40 – turning point
Location tracking Xiaomi Poco C40 – bridge
Location tracking Xiaomi Poco C40 – bridge

Call functions and voice quality

The Xiaomi Poco C40 uses the Google Phone app for calls, which can also be found on many other android phones.

Voice quality is quite good through the internal ear speaker: the person on the other end sounded full and clear. Similarly, they could hear what we were saying clearly, even when we spoke more softly. 

However, when we were using the speakerphone, the other person sounded considerable thinner, but our voice still sounded rather good. The microphone only has issues dealing with background noises.

Cameras – Single camera produces dull images

Shot with the front camera
Shot with the front camera

The main camera on the Poco phone has a 13MP sensor and a fairly narrow aperture of f/2.2, meaning not a lot of light can reach the sensor. You'll immediately notice this when looking at the photo of the flower, which appears rather dull.

In the urban landscape shot, the autofocus didn't manage to get everything looking sharp, and surfaces appear blotchy. In the low-light situation, the was hardly any brightening and details quickly ended up looking blurry.

The phone is capable of recording videos at up to 1080p and 30 fps. Brightness adjustment is pretty fast in video mode, and autofocus mostly reacts accurately without hunting back and forth. But videos also aren't particularly bright, so you would need to ensure lighting conditions are great when filming with the phone.

The front camera produces photos with a noticeable blue tint and doesn't brighten images very well even in good lighting. You only need to zoom in slightly to see that details look very rough in the photo.

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.

Main camera: flowerMain camera: urban landscapeMain camera: low-light shot
click to load images

In a studio environment, the centre of the test chart is rendered quite well, whilst the photo quickly gets blurry towards the edges. Colours end up looking a little too vibrant but are otherwise reproduced rather accurately.

Overall, although the camera offers a few good ideas, the image quality is mostly below average in everyday use, even for a very cheap phone.

ColorChecker
11.1 ∆E
7 ∆E
11.1 ∆E
11.1 ∆E
10.7 ∆E
3.9 ∆E
6.2 ∆E
10.7 ∆E
8.3 ∆E
10.2 ∆E
2.1 ∆E
3.9 ∆E
12.2 ∆E
7.3 ∆E
7.3 ∆E
3.1 ∆E
10.5 ∆E
11.7 ∆E
6.5 ∆E
5.9 ∆E
7.6 ∆E
9 ∆E
4.9 ∆E
6.9 ∆E
ColorChecker Xiaomi Poco C40: 7.9 ∆E min: 2.14 - max: 12.2 ∆E
ColorChecker
28.9 ∆E
54.5 ∆E
39.1 ∆E
37.3 ∆E
44.2 ∆E
64.1 ∆E
53.8 ∆E
34.8 ∆E
43.1 ∆E
26.7 ∆E
66.8 ∆E
64.9 ∆E
30.2 ∆E
48.8 ∆E
37 ∆E
77.5 ∆E
43 ∆E
44.8 ∆E
93 ∆E
70.7 ∆E
52.1 ∆E
36.6 ∆E
23.5 ∆E
13.2 ∆E
ColorChecker Xiaomi Poco C40: 47.04 ∆E min: 13.2 - max: 92.97 ∆E

Accessories and warranty – Slow charger

Inside the box, the Poco C40 comes with a charger, a USB-C cable, a SIM ejector tool and the usual documentation.

The charger is only rated at 10 watts and therefore can't take advantage of the max charging speed that the phone is capable of. You can get a 33-watt charger from Xiaomi for a relatively low price of 15 Euro (the North American variant costs US$20).

Poco provides a 24-month warranty on the phone as long as it is purchased within the EU. The warranty period may only be one year in some other regions.

Input devices & operation – No face recognition

The phone's touchscreen is reliable to use, remains sensitive even at the corners and offers a pretty smooth surface for your finger to glide across. However, the display is a 60Hz panel, meaning it doesn't feel as responsive as faster screens on some of the other phones in this price range.

The device can be unlocked using fingerprint. There is a physical sensor on the back below the camera that can be easily accessed using the index finger. It recognises fingerprints stored on the phone very accurately, but takes a second to actually unlock the screen. The Poco C40 doesn't have any face unlock feature on board.

Keyboard in portrait mode
Keyboard in portrait mode
Keyboard in landscape mode
Keyboard in landscape mode

Display – Slow but pretty bright

Subpixel matrix
Subpixel matrix

As is usual for a phone of this class, the Xiaomi Poco C40 is equipped with a 720p display. We like the fairly even brightness distribution of the display, and the screen's max brightness is also quite decent for the price.

As mentioned earlier, the phone still only has a 60Hz screen. In contrast, many other manufacturers are meanwhile already giving entry-level phones at least 90Hz displays to provide a more fluid experience.

The Poco C40 doesn't rely on PWM to dim the backlight. This means that even those who are more sensitive to PWM flicker should be able to use the screen without any issues. Response time, however, is quite slow.

444
cd/m²
455
cd/m²
431
cd/m²
449
cd/m²
468
cd/m²
441
cd/m²
452
cd/m²
467
cd/m²
445
cd/m²
Distribution of brightness
X-Rite i1Pro 2
Maximum: 468 cd/m² (Nits) Average: 450.2 cd/m² Minimum: 2 cd/m²
Brightness Distribution: 92 %
Center on Battery: 468 cd/m²
Contrast: 1170:1 (Black: 0.4 cd/m²)
ΔE Color 4.53 | 0.59-29.43 Ø5.2
ΔE Greyscale 6.5 | 0.57-98 Ø5.5
93.1% sRGB (Calman 2D)
Gamma: 2.191
Xiaomi Poco C40
IPS, 1650x720, 6.71
Xiaomi Redmi 10C
IPS, 1650x720, 6.71
Samsung Galaxy A04s
PLS, 1600x720, 6.50
Motorola Moto G22
IPS LCD, 1600x720, 6.50
Nokia G21
IPS, 1600x720, 6.50
Screen
25%
4%
-8%
-8%
Brightness middle
468
511
9%
426
-9%
451
-4%
492
5%
Brightness
450
478
6%
390
-13%
431
-4%
484
8%
Brightness Distribution
92
84
-9%
84
-9%
90
-2%
86
-7%
Black Level *
0.4
0.42
-5%
0.33
17%
0.5
-25%
0.46
-15%
Contrast
1170
1217
4%
1291
10%
902
-23%
1070
-9%
Colorchecker dE 2000 *
4.53
1.51
67%
4.39
3%
5.82
-28%
6.02
-33%
Colorchecker dE 2000 max. *
8.96
2.53
72%
7.97
11%
9.3
-4%
9.13
-2%
Greyscale dE 2000 *
6.5
2.9
55%
5.1
22%
5
23%
7.1
-9%
Gamma
2.191 100%
2.266 97%
2.184 101%
2.776 79%
2.345 94%
CCT
8122 80%
6443 101%
7985 81%
7683 85%
8918 73%

* ... 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 not detected

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 19454 (minimum: 5 - maximum: 3846000) Hz was measured.

When analysing the greyscale rendering in the CalMAN software, we found that the screen has a noticeable blue tint. In particular, shades of light blue and green are rendered too inaccurately. Overall, as with many devices in this price range, the colour production isn't particularly accurate and tends to be somewhat cool.

CalMAN greyscale
CalMAN greyscale
CalMAN colour accuracy
CalMAN colour accuracy
CalMAN sRGB colour gamut
CalMAN sRGB colour gamut
CalMAN AdobeRGB colour gamut
CalMAN AdobeRGB colour gamut
CalMAN DCI P3 colour gamut
CalMAN DCI P3 colour gamut
CalMAN saturation
CalMAN saturation

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
28 ms ... rise ↗ and fall ↘ combined↗ 13 ms rise
↘ 15 ms fall
The screen shows relatively slow response rates in our tests and may be too slow for gamers.
In comparison, all tested devices range from 0.4 (minimum) to 240 (maximum) ms. » 64 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (22.7 ms).
       Response Time 50% Grey to 80% Grey
40 ms ... rise ↗ and fall ↘ combined↗ 23 ms rise
↘ 17 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.25 (minimum) to 636 (maximum) ms. » 52 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (35.8 ms).

When using the phone outdoors, you can still make out things on the screen on a cloudy day. However, as soon as the sun comes out, you might want to find yourself a shady spot to use the device, as otherwise reflections will overpower the image being displayed.

The screen has a great viewing angle because it uses IPS technology. Images on screen remain acceptable even when viewed from a sharp angle.

Outdoor use
Outdoor use
Viewing angle
Viewing angle

Performance – Patience required

The SoC in the Poco C40 is made by the company JLQ. Never heard of them? JLQ is actually a joint venture in China between Qualcomm and other companies. Named JR510, the bottom-tier SoC will remind you a lot of the Snapdragon 439 made by the American company.

You will quickly notice this in day-to-day use: the device stutters constantly and keeps you waiting even when the apps in question are not very demanding. Some benchmarks won't even run because the GPU, for example, can't handle Vulkan API. 

The slow storage hardly makes the experience any better. Things often take a long time to load and the system feels even slower because of the sluggish storage.

For web browsing, the Poco C40 delivers a similar level of performance as other budget smartphones. But that isn't saying much: even with high-speed Internet, it takes a while for websites to load, and you often have to wait even longer for images to appear.

Only those who are patient will enjoy the Poco C40 and its performance in everyday use.

Geekbench 5.4
Single-Core
Average of class Smartphone
  (58 - 1885, n=261, last 2 years)
769 Points ∼100% +369%
Xiaomi Redmi 10C
Qualcomm Snapdragon 680 4G, Adreno 610, 4096
377 Points ∼49% +130%
Nokia G21
UNISOC T606, Mali-G57 MP1, 4096
312 Points ∼41% +90%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
176 Points ∼23% +7%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
172 Points ∼22% +5%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
164 Points ∼21%
Average JLQ JR510
 
164 Points ∼21% 0%
Multi-Core
Average of class Smartphone
  (291 - 5538, n=261, last 2 years)
2472 Points ∼100% +202%
Xiaomi Redmi 10C
Qualcomm Snapdragon 680 4G, Adreno 610, 4096
1644 Points ∼67% +101%
Nokia G21
UNISOC T606, Mali-G57 MP1, 4096
1185 Points ∼48% +45%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
1059 Points ∼43% +29%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
947 Points ∼38% +16%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
818 Points ∼33%
Average JLQ JR510
 
818 Points ∼33% 0%
Antutu v9 - Total Score
Average of class Smartphone
  (111952 - 1300282, n=164, last 2 years)
600849 Points ∼100% +403%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
146815 Points ∼24% +23%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
119447 Points ∼20%
Average JLQ JR510
 
119447 Points ∼20% 0%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
111952 Points ∼19% -6%
PCMark for Android - Work 3.0
Average of class Smartphone
  (4436 - 19200, n=223, last 2 years)
10352 Points ∼100% +117%
Nokia G21
UNISOC T606, Mali-G57 MP1, 4096
7805 Points ∼75% +63%
Xiaomi Redmi 10C
Qualcomm Snapdragon 680 4G, Adreno 610, 4096
5884 Points ∼57% +23%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
5796 Points ∼56% +21%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
4922 Points ∼48% +3%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
4780 Points ∼46%
Average JLQ JR510
 
4780 Points ∼46% 0%
CrossMark - Overall
Average of class Smartphone
  (226 - 1332, n=101, last 2 years)
786 Points ∼100% +181%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
280 Points ∼36%
Average JLQ JR510
 
280 Points ∼36% 0%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
274 Points ∼35% -2%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
232 Points ∼30% -17%
BaseMark OS II
Overall
Average of class Smartphone
  (411 - 9555, n=173, last 2 years)
4835 Points ∼100% +1076%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
1491 Points ∼31% +263%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
1226 Points ∼25% +198%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
411 Points ∼9%
Average JLQ JR510
 
411 Points ∼9% 0%
System
Average of class Smartphone
  (2083 - 19657, n=173, last 2 years)
8474 Points ∼100% +220%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
3248 Points ∼38% +23%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
2651 Points ∼31%
Average JLQ JR510
 
2651 Points ∼31% 0%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
2565 Points ∼30% -3%
Memory
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
11617 Points ∼100% +714%
Average of class Smartphone
  (670 - 11617, n=173, last 2 years)
5398 Points ∼46% +278%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
1428 Points ∼12%
Average JLQ JR510
 
1428 Points ∼12% 0%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
1210 Points ∼10% -15%
Graphics
Average of class Smartphone
  (697 - 27384, n=173, last 2 years)
9656 Points ∼100% +1164%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
1259 Points ∼13% +65%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
1017 Points ∼11% +33%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
764 Points ∼8%
Average JLQ JR510
 
764 Points ∼8% 0%
Web
Average of class Smartphone
  (10 - 2392, n=173, last 2 years)
1431 Points ∼100% +14210%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
747 Points ∼52% +7370%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
718 Points ∼50% +7080%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
10 Points ∼1%
Average JLQ JR510
 
10 Points ∼1% 0%
UL Procyon AI Inference - Overall Score
Average of class Smartphone
  (207 - 84787, n=100, last 2 years)
23472 Points ∼100% +11239%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
2841 Points ∼12% +1272%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
2514 Points ∼11% +1114%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
207 Points ∼1%
Average JLQ JR510
 
207 Points ∼1% 0%
AImark - Score v2.x
Average of class Smartphone
  (1043 - 286905, n=147, last 2 years)
52972 Points ∼100% +1085%
Samsung Galaxy A04s
Samsung Exynos 850, Mali-G52 MP1, 3072
4487 Points ∼8% 0%
Xiaomi Poco C40
JLQ JR510, Mali-G52 MP1, 3072
4472 Points ∼8%
Average JLQ JR510
 
4472 Points ∼8% 0%
Motorola Moto G22
Mediatek Helio G37, PowerVR GE8320, 4096
4323 Points ∼8% -3%
3DMark / Sling Shot Extreme (ES 3.1) Unlimited Physics
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
2825 Points ∼100% +54%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
2559 Points ∼91% +39%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
2150 Points ∼76% +17%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
1840 Points ∼65%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
1283 Points ∼45% -30%
3DMark / Sling Shot Extreme (ES 3.1) Unlimited Graphics
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
1175 Points ∼100% +131%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
814 Points ∼69% +60%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
791 Points ∼67% +56%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
508 Points ∼43%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
460 Points ∼39% -9%
3DMark / Sling Shot Extreme (ES 3.1) Unlimited
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
1350 Points ∼100% +123%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
959 Points ∼71% +59%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
920 Points ∼68% +52%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
605 Points ∼45%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
536 Points ∼40% -11%
3DMark / Sling Shot Extreme (ES 3.1)
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
1353 Points ∼100% +123%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
945 Points ∼70% +56%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
903 Points ∼67% +49%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
607 Points ∼45%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
453 Points ∼33% -25%
3DMark / Sling Shot Extreme (ES 3.1) Graphics
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
1177 Points ∼100% +130%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
806 Points ∼68% +57%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
778 Points ∼66% +52%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
512 Points ∼44%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
383 Points ∼33% -25%
3DMark / Sling Shot Extreme (ES 3.1) Physics
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
2831 Points ∼100% +63%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
2379 Points ∼84% +37%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
2074 Points ∼73% +20%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
1734 Points ∼61%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
1265 Points ∼45% -27%
GFXBench (DX / GLBenchmark) 2.7 / T-Rex Onscreen
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
34 fps ∼100% +21%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
29 fps ∼85% +4%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
28 fps ∼82%
GFXBench (DX / GLBenchmark) 2.7 / T-Rex Offscreen
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
24 fps ∼100% +26%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
22 fps ∼92% +16%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
19 fps ∼79%
GFXBench 3.0 / Manhattan Onscreen OGL
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
28 fps ∼100% +56%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
18 fps ∼64% 0%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
18 fps ∼64%
GFXBench 3.0 / 1080p Manhattan Offscreen
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
16 fps ∼100% +45%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
12 fps ∼75% +9%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
11 fps ∼69%
GFXBench 3.1 / Manhattan ES 3.1 Onscreen
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
19 fps ∼100% +46%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
13 fps ∼68%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
12 fps ∼63% -8%
GFXBench 3.1 / Manhattan ES 3.1 Offscreen
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
9.4 fps ∼100% +42%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
7.5 fps ∼80% +14%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
6.6 fps ∼70%
GFXBench / Car Chase Onscreen
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
10 fps ∼100% +35%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
7.4 fps ∼74%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
5.4 fps ∼54% -27%
GFXBench / Car Chase Offscreen
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
6.1 fps ∼100% +45%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
4.2 fps ∼69%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
3.5 fps ∼57% -17%
GFXBench / Aztec Ruins High Tier Onscreen
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
10 fps ∼100% +122%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
6.9 fps ∼69% +53%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
6 fps ∼60% +33%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
5 fps ∼50% +11%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
4.5 fps ∼45%
GFXBench / Aztec Ruins High Tier Offscreen
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
3.2 fps ∼100% +129%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
2.2 fps ∼69% +57%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
2 fps ∼63% +43%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
1.5 fps ∼47% +7%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
1.4 fps ∼44%
GFXBench / Aztec Ruins Normal Tier Onscreen
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
17 fps ∼100% +143%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
11 fps ∼65% +57%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
9.5 fps ∼56% +36%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
7 fps ∼41% 0%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
7 fps ∼41%
GFXBench / Aztec Ruins Normal Tier Offscreen
Xiaomi Redmi 10C
Adreno 610, SD 680, 64 GB UFS 2.2 Flash
9.5 fps ∼100% +144%
Samsung Galaxy A04s
Mali-G52 MP1, Exynos 850, 32 GB eMMC Flash
6.1 fps ∼64% +56%
Nokia G21
Mali-G57 MP1, T606, 64 GB eMMC Flash
5.2 fps ∼55% +33%
Motorola Moto G22
PowerVR GE8320, Helio G37, 64 GB eMMC Flash
4 fps ∼42% +3%
Xiaomi Poco C40
Mali-G52 MP1, JR510, 32 GB eMMC Flash
3.9 fps ∼41%
Jetstream 2 - Total Score
Average of class Smartphone (14.8 - 282, n=170, last 2 years)
77.4 Points ∼100%
Samsung Galaxy A04s (Chrome 106)
23.039 Points ∼30%
Motorola Moto G22 (Chrome101)
21.156 Points ∼27%
Speedometer 2.0 - Result
Average of class Smartphone (12.8 - 375, n=158, last 2 years)
73.1 runs/min ∼100% +391%
Samsung Galaxy A04s (Chome 106)
15.8 runs/min ∼22% +6%
Motorola Moto G22 (Chrome101)
15.01 runs/min ∼21% +1%
Xiaomi Poco C40 (Chome 106)
14.9 runs/min ∼20%
Average JLQ JR510
14.9 runs/min ∼20% 0%
WebXPRT 4 - Overall Score
Average of class Smartphone (25 - 202, n=58, last 2 years)
90.6 Points ∼100% +262%
Xiaomi Poco C40 (Chrome 106)
25 Points ∼28%
Samsung Galaxy A04s (Chrome 106)
25 Points ∼28% 0%
Average JLQ JR510
25 Points ∼28% 0%
WebXPRT 3 - ---
Average of class Smartphone (27 - 292, n=168, last 2 years)
105 Points ∼100% +128%
Xiaomi Poco C40 (Chrome 106)
46 Points ∼44%
Average JLQ JR510
46 Points ∼44% 0%
Samsung Galaxy A04s (Chrome 106)
39 Points ∼37% -15%
Motorola Moto G22 (Chrome101)
37 Points ∼35% -20%
Octane V2 - Total Score
Average of class Smartphone (3905 - 74261, n=195, last 2 years)
27701 Points ∼100% +364%
Xiaomi Poco C40 (Chrome 106)
5975 Points ∼22%
Average JLQ JR510
5975 Points ∼22% 0%
Samsung Galaxy A04s (Chrome 106)
5894 Points ∼21% -1%
Motorola Moto G22 (Chrome101)
5648 Points ∼20% -5%
Mozilla Kraken 1.1 - Total Score
Motorola Moto G22 (Chrome101)
9051.2 ms * ∼100% -1%
Xiaomi Poco C40 (Chrome 106)
8973 ms * ∼99%
Average JLQ JR510
8973 ms * ∼99% -0%
Samsung Galaxy A04s (Chrome 106)
8423 ms * ∼93% +6%
Average of class Smartphone (414 - 12437, n=180, last 2 years)
2387 ms * ∼26% +73%

* ... smaller is better

Xiaomi Poco C40Xiaomi Redmi 10CSamsung Galaxy A04sMotorola Moto G22Nokia G21Average 32 GB eMMC FlashAverage of class Smartphone
AndroBench 3-5
256%
18%
-20%
43%
-15%
352%
Sequential Read 256KB
281.7
927.7
229%
302.4
7%
215.45
-24%
257.6
-9%
241 ?(25.8 - 452, n=239)
-14%
1059 ?(90.5 - 3557, n=253, last 2 years)
276%
Sequential Write 256KB
129.8
510.2
293%
83.3
-36%
112.78
-13%
180.6
39%
99.4 ?(14.8 - 191.5, n=239)
-23%
625 ?(11.9 - 2834, n=253, last 2 years)
382%
Random Read 4KB
29.2
120.2
312%
62.7
115%
39.32
35%
74
153%
42.6 ?(3.59 - 117.2, n=239)
46%
192.1 ?(13.5 - 543, n=253, last 2 years)
558%
Random Write 4KB
67.7
195.2
188%
58.9
-13%
16.34
-76%
60.2
-11%
21.3 ?(0.75 - 89.5, n=239)
-69%
197.4 ?(13 - 552, n=254, last 2 years)
192%

Gaming – Only for casual gamers

The very budget Poco C40 is only suitable for gaming to a limited extent, as shown by our gaming tests. Even a less demanding game like Armajet experienced severe frame rate drops that actually made the fast-paced shooter unplayable.

In PUBG, there were likewise frequent dips in frame rate even at the lowest settings. And the game ran at a maximum of about 20 fps.

The Poco C40 should be adequate for people who just want to play simple games that don't rely on quick reaction. But you should probably look at other phones if you want to play even the simplest of action games.

Note: we measured the in-game frame rates using software from GameBench.

Armajet
Armajet
PUBG Mobile
PUBG Mobile
05101520253035Tooltip
Xiaomi Poco C40; Armajet; 1.61.6: Ø26.7 (11-36)
Xiaomi Poco C40; PUBG Mobile; Smooth; 2.2.0: Ø19.5 (9-24)
Xiaomi Poco C40; PUBG Mobile; HD; 2.2.0: Ø15 (3-24)

Emissions – Hardly gets warm

Temperature

GFXBench stress test
GFXBench stress test

The phone's outer surfaces stayed reasonably cool and never exceeded 37­°C (98.6°F), so you will hardly feel any heat from the device.

It really wasn't easy to determine whether the SoC can maintained its performance over prolonged periods. This is because 3DMark stress tests refused to launch. We then attempted to analyse the system's stability using the stress test in GFXBench and found that the Poco C40 still delivered almost the same level of performance even after a few dozen runs of the benchmark.

Max. Load
 36.2 °C
97 F
29.9 °C
86 F
27.8 °C
82 F
 
 35.5 °C
96 F
29.8 °C
86 F
27.9 °C
82 F
 
 33.7 °C
93 F
29.8 °C
86 F
28.2 °C
83 F
 
Maximum: 36.2 °C = 97 F
Average: 31 °C = 88 F
29.4 °C
85 F
30.6 °C
87 F
34.7 °C
94 F
29.3 °C
85 F
30.6 °C
87 F
36 °C
97 F
28.8 °C
84 F
31 °C
88 F
35.2 °C
95 F
Maximum: 36 °C = 97 F
Average: 31.7 °C = 89 F
Power Supply (max.)  39.9 °C = 104 F | Room Temperature 19.2 °C = 67 F | Fluke t3000FC (calibrated), Voltcraft IR-260
(+) The average temperature for the upper side under maximal load is 31 °C / 88 F, compared to the average of 32.7 °C / 91 F for the devices in the class Smartphone.
(+) The maximum temperature on the upper side is 36.2 °C / 97 F, compared to the average of 35 °C / 95 F, ranging from 21.9 to 52.9 °C for the class Smartphone.
(+) The bottom heats up to a maximum of 36 °C / 97 F, compared to the average of 33.8 °C / 93 F
(+) In idle usage, the average temperature for the upper side is 23 °C / 73 F, compared to the device average of 32.7 °C / 91 F.
Heat map (front)
Heat map (front)
Heat map (back)
Heat map (back)

Speak

The mono speaker on the Xiaomi Poco C40 doesn't get particularly loud. On the flip side, it doesn't distort at maximum volume. The sound produced by the speaker is fairly thin and lacks any audible bass. But the speaker is fine if you just want give a piece of music or video a quick listen, especially considering that speech sounds pretty clear from it.

Apart from the 3.5 mm audio jack, we also like the fact that the Poco phone supports a wide range of Bluetooth codecs, even high-res ones like LHDC and aptX Adaptive. This lets you connect high-res certified headphones over Bluetooth and enjoy the full sound quality.

dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2041.5412537.139.73134.431.14032.1325038.936.76327.326.38020.219.510021.123.912518.421.716016.930.320011.833.925013.840.531512.546.140012.552.850012.656.963011.359.780012.363.9100011.866.512501268.2160010.471.720008.870.725009.469.531509.867.1400010.660.250001163.5630011.767.9800012.468.8100001371.91250013.871.71600014.552.9SPL23.680.1N0.544median 12.3median 63.5Delta1.311.249.350.843.943.837.135.137.940.743.84531.833.92829.927.933.123.535.423.838.819.640.61943.117.549.215.252.716.8602168.222.376.518.781.417.376.115.870.415.868.117.470.418.472.220.270.420.369.420.173.121.471.721.871.521.365.821.855.631.685.61.661.2median 20.1median 68.21.810.7hearing rangehide median Pink NoiseXiaomi Poco C40Nokia G21
Frequency diagram (checkboxes can be checked and unchecked to compare devices)
Xiaomi Poco C40 audio analysis

(±) | speaker loudness is average but good (80.1 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 30.8% lower than median
(±) | linearity of bass is average (10% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 5.6% higher than median
(+) | mids are linear (6.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 4.4% away from median
(+) | highs are linear (6.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (23.7% difference to median)
Compared to same class
» 55% of all tested devices in this class were better, 11% similar, 34% worse
» The best had a delta of 12%, average was 23%, worst was 65%
Compared to all devices tested
» 73% of all tested devices were better, 7% similar, 20% worse
» The best had a delta of 3%, average was 20%, worst was 65%

Nokia G21 audio analysis

(+) | speakers can play relatively loud (85.6 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 28.2% lower than median
(+) | bass is linear (6.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 6.9% higher than median
(±) | linearity of mids is average (11.8% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3% away from median
(+) | highs are linear (3.6% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (23.6% difference to median)
Compared to same class
» 54% of all tested devices in this class were better, 12% similar, 34% worse
» The best had a delta of 12%, average was 23%, worst was 65%
Compared to all devices tested
» 72% of all tested devices were better, 7% similar, 21% worse
» The best had a delta of 3%, average was 20%, worst was 65%

Battery life – Large battery with long charging time

Power consumption

In terms of power usage, the Poco C40 can hold its own against other smartphones in this price range thanks to its JLQ SoC. Its peak power usage of 4.9 watts under load is absolutely within the normal range. The Poco C40 is only marginally more power-hungry at idle.

The phone can be charged at up to 18 watts, but you'll have to purchase a suitable charger separately: the included charger can only output a maximum of 10 watts – something we find greatly annoying. This, combined with the large battery, means that it can sometimes take four hours to fully recharge the phone. If nothing else, using a high-speed charger could shorten charging time by one hour.

Power Consumption
Off / Standbydarklight 0 / 0.1 Watt
Idledarkmidlight 1.2 / 1.5 / 1.7 Watt
Load midlight 3.5 / 4.9 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 Poco C40
6000 mAh
Samsung Galaxy A04s
5000 mAh
Motorola Moto G22
5000 mAh
Average JLQ JR510
 
Average of class Smartphone
 
Power Consumption
11%
4%
0%
-11%
Idle Minimum *
1.2
1.1
8%
0.9
25%
1.2
-0%
0.891 ?(0.12 - 2.5, n=186, last 2 years)
26%
Idle Average *
1.5
1.3
13%
1.2
20%
1.5
-0%
1.553 ?(0.65 - 3.6, n=186, last 2 years)
-4%
Idle Maximum *
1.7
1.6
6%
1.5
12%
1.7
-0%
1.762 ?(0.69 - 3.7, n=186, last 2 years)
-4%
Load Average *
3.5
2.7
23%
4.5
-29%
3.5
-0%
4.36 ?(2.1 - 7.74, n=186, last 2 years)
-25%
Load Maximum *
4.9
4.7
4%
5.2
-6%
4.9
-0%
7.23 ?(3.56 - 11.9, n=186, last 2 years)
-48%

* ... smaller is better

Power consumption: Geekbench (150 cd/m²)

00.20.50.70.91.21.41.61.92.12.32.62.833.33.53.744.24.4Tooltip
Xiaomi Poco C40: Ø2.8 (1.347-4.68)

Power consumption: GFXBench (150 cd/m²)

00.20.40.60.811.21.41.61.71.92.12.32.52.72.93.13.33.53.7Tooltip
Xiaomi Poco C40; 1920x1080 Aztec Ruins Normal Offscreen: Ø2.59 (2.16-3.88)
Xiaomi Poco C40; Idle 150cd/m2: Ø1.307 (1.181-1.808)

Battery life

The 6,000 mAh battery in the Poco C40 is certainly one of the highlights of this budget phone. It kept the device running for more than 20 hours in our Wi-Fi test, so the phone should be able to last more than two days with moderate usage and won't have to be plugged in as often.

Even at full load, the Poco C40 managed to keep going for over 6 hours and 40 minutes.

Battery Runtime
Idle (without WLAN, min brightness)
47h 36min
WiFi Websurfing
20h 05min
Big Buck Bunny H.264 1080p
20h 49min
Load (maximum brightness)
6h 42min
Xiaomi Poco C40
6000 mAh
Xiaomi Redmi 10C
5000 mAh
Samsung Galaxy A04s
5000 mAh
Motorola Moto G22
5000 mAh
Nokia G21
5050 mAh
Battery Runtime
-25%
-14%
-10%
-10%
Reader / Idle
2856
2253
-21%
2785
-2%
H.264
1249
1062
-15%
1196
-4%
WiFi v1.3
1205
908
-25%
977
-19%
1101
-9%
1087
-10%
Load
402
396
-1%
298
-26%

Pros

+ fairly bright screen
+ very long battery life
+ relatively fast charging technology
+ supports many Bluetooth codecs
+ no PWM
+ stylish body

Cons

- sluggish SoC
- slow storage
- GPS errors
- mediocre camera
- tons of bloatware
- only includes a 10-watt charger
- no NFC support

Verdict – Xiaomi misses the mark too sometimes

Xiaomi Poco C40 review. The review sample is kindly provided by:
Xiaomi Poco C40 review. The review sample is kindly provided by:
notebooksbilliger.de

The Chinese company Xiaomi has proved time and again that it can deliver great value for money with its smartphones. But it seems like even Xiaomi's product designers and engineers have hit their limits with the ultra-budget Poco C40: whilst the smartphone is equipped with a remarkably large battery for its price and thus has long battery life, it is otherwise nothing more than standard fare in most aspects for an entry-level phone under 200 Euro (US$200). 

As a result, both the camera and ARM SoC fail to be particularly impressive. Despite being able to draw on Qualcomm's experience, the SoC suffers from extremely poor performance and limitations in terms of graphics compatibility. Moreover, the display exhibits a blue tint, delivers image quality that is at best typical for this price range and offers only a 60Hz refresh rate.

We can hardly recommend using the Poco C40 as a navigation device due to errors in location tracking. And the slow storage makes the system even more sluggish.

The Poco C40 tries to attract consumers with its large battery, but the phone offers very little else that would make it truly recommendable. 

The Xiaomi Redmi 10C has significantly better performance and is overall a superior entry-level phone. Another phone to consider is the Motorola Moto G22, which offers similarly great battery life and a faster display.

Price and availability

In Germany, the lower-spec version of the Poco C40 (3 GB RAM and 32 GB storage) is available for 150 Euro on Poco's website. The higher-end configuration with 4 GB of RAM and 64 GB of storage will set you back 30 Euro more. The two models are also on sale for just 140 Euro and 160 Euro on notebookbilliger.de.

Interestingly, in the US both versions of the phone are currently available at the same price of US$180 on Amazon.com.

Xiaomi Poco C40 - 11/05/2022 v7
Florian Schmitt

Chassis
81%
Keyboard
65 / 75 → 87%
Pointing Device
89%
Connectivity
43 / 70 → 62%
Weight
88%
Battery
92%
Display
84%
Games Performance
7 / 64 → 11%
Application Performance
35 / 86 → 41%
Temperature
94%
Noise
100%
Audio
56 / 90 → 62%
Camera
50%
Average
68%
74%
Smartphone - Weighted Average

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> Notebook / Laptop Reviews and News > Reviews > Xiaomi Poco C40 smartphone review – Slow phone with long battery life
Florian Schmitt, 2022-11- 9 (Update: 2022-11- 9)