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Xiaomi Redmi K40 Pro


Xiaomi Redmi K40 Pro
Xiaomi Redmi K40 Pro (Redmi K40 Series)
Qualcomm Snapdragon 888 5G 8 x 1.8 - 2.8 GHz, Cortex-X1 / A78 / A55 (Kryo 680)
Graphics adapter
8 GB 
6.67 inch 20:9, 2400 x 1080 pixel 395 PPI, Capacitive Touchscreen , Super AMOLED, 360 Hz touch sampling rate, glossy: yes, HDR, 120 Hz
128 GB UFS 3.1 Flash, 128 GB 
, 106 GB free
1 USB 2.0, USB-C Power Delivery (PD), Audio Connections: USB Type C, 1 Fingerprint Reader, NFC, Brightness Sensor, Sensors: Accelerometer, gyro, proximity, compass, color spectrum, barometer, OTG, IR-Blaster, Miracast
Wi-Fi 6E (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/ax = Wi-Fi 6), Bluetooth 5.2, 5G: n1 / n3 / n28A / n41 / n77 / n78, 4G: FDD-LTE: B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B17 / B18 / B19 / B20 / B26 / B28A, TDD-LTE: B34 / B38 / B39 / B40 / B41 / B42, 3G: B1 / B2 / B4 / B5 / B6 / B8 / B19; 2G: 850/900/1800 /1900MHz, Dual SIM, LTE, 5G, GPS
height x width x depth (in mm): 7.8 x 163.7 x 76.4 ( = 0.31 x 6.44 x 3.01 in)
4520 mAh Lithium-Polymer
fast charging / Quickcharge
Operating System
Android 11
Primary Camera: 64 MPix (f/1.9, 26mm, 1/1.7", 0.8µm) + 8 MP (f/2.2, ultrawide) + 5 MP (f/2.4, 50mm, 1/5.0", 1.12µm, macro)
Secondary Camera: 20 MPix (f/2.5, 1/3.4", 0.8µm)
Additional features
Speakers: Dual, Keyboard: Virtual, Case, charger, USB cable, MiUI 12.5, 12 Months Warranty, Widevine L1, Camera2 API: Level 3, GNSS: GPS, Galileo, GLONASS, BeiDou, fanless
196 g ( = 6.91 oz / 0.43 pounds), Power Supply: 95 g ( = 3.35 oz / 0.21 pounds)
480 Euro



Average Score: 86.3% - good
Average of 3 scores (from 5 reviews)
price: 96%, performance: 90%, features: 53%, display: 97% mobility: 88%, workmanship: 86%, ergonomy: 81%, emissions: 95%

Reviews for the Xiaomi Redmi K40 Pro

86.9% Xiaomi Redmi K40 Pro smartphone review - Flagship performance at a mid-range price | Notebookcheck
Hardly any other smartphone currently offers such good technical features as the Redmi K40 Pro: 120 Hz AMOLED panel with 1,300 nits, Snapdragon 888, UFS 3.1 storage and WiFi 6E for well under 500 Euros (~$609). However, the Xiaomi phone has a big catch...
Redmi K40 Pro Review – That’s What I Call A Flagship Killer
Source: Cashify English
Xiaomi Redmi K40 Pro is an impeccable flagship smartphone with excellent battery life, a great OLED panel, powerful chipset, a stereo speaker setup, and that too at a price tag that no Samsung or Apple flagship could reach i.e. half of what you would pay on these two brands to buy a flagship phone. The phone does have some issues though such as overheating when playing games and extensive tasks.
Single Review, online available, Medium, Date: 08/22/2021
Redmi K40 Pro Review. Better Than The POCO F3?
Source: TechTablets English
Redmi K40 Pro review. It's like the POCO F3, but it has the IMX682 and the faster SD888. This detailed review covers all you need to know if you're considering it.
Single Review, online available, Very Long, Date: 03/26/2021

Foreign Reviews

82% Xiaomi Redmi K40 Pro Wenn es mal wieder preiswerter sein soll!
Source: Go2 Mobile German DE→EN
Single Review, online available, Long, Date: 04/11/2021
Rating: Total score: 82% price: 96% performance: 91% mobility: 85% workmanship: 83%
90% Redmi K40 Pro
Source: German DE→EN
Single Review, online available, Long, Date: 03/31/2021
Rating: Total score: 90% performance: 100% display: 100% mobility: 90% workmanship: 90%
Trên tay Redmi K40 Pro tại VN: Phiên bản giá rẻ của Mi 11, chip Snapdragon 888, giá 10.7 triệu đồng
Source: Genk VN→EN
Positive: Good price; decent processor; quick charging.
Single Review, online available, Long, Date: 03/10/2021


Qualcomm Adreno 660: Graphics chip for smartphones and tablets that is integrated within the Qualcomm Snapdragon 888 SoC. Qualcomm claims that it is 35% faster than the Adreno 650 in the Snapdragon 865 SoC and offers a 20% better power efficiency.For Android it should be one of the fastest graphics cards in 2021.

Modern games should be playable with these graphics cards at low settings and resolutions. Casual gamers may be happy with these cards.

» Further information can be found in our Comparison of Mobile Graphics Cards and the corresponding Benchmark List.

SD 888 5G: High-end SoC for smartphones that was introduced in late 2020 and manufactured in 5 nm at Samsung. Integrates one “Prime Core” based on a ARM Cortex-X1 architecture clocked at up to 2.84 GHz. Three more performance cores are based on the A78 but clock up to 2.42 GHz. Furthermore, four energy saving cores are integrated that are based on the ARM Cortex-A55 architecture and clock at up to 1.8 GHz. In addition to the processor cores, the SoC integrates a WiFi 6e modem, a Hexagon 780 DSP (up to 26 TOPS of AI performance) and a Spectra 580 ISP. The integrated memory controller now supports faster LPDDR5 memory with up to 3,200 MHz. 5G is now included in the chip with the Snapdragon X60 modem.» Further information can be found in our Comparison of Mobile Processsors.


Only a few smartphones have larger screens.
Large display-sizes allow higher resolutions. So, details like letters are bigger. On the other hand, the power consumption is lower with small screen diagonals and the devices are smaller, more lightweight and cheaper.

» To find out how fine a display is, see our DPI List.

0.196 kg:

Only few smartphones are more lightweight than this.


Xiaomi Tech was founded as a Chinese smartphone producer in 2010 and soon reached high market shares in its home market. Although Xiaomi is not one of the Top 5 smartphone manufacturers worldwide in 2016, it is nevertheless one of the big global players in this market segment.

Since 2015 there are many reviews. The ratings have been above average since 2016.

86.3%: This is a good rating above average. Nevertheless you should not forget, that 10-15% of all notebook-models get a better rating.

» Further information can be found in our Notebook Purchase Guide.


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Stefan Hinum (Update: 2021-04-24)