Score from 10
3.6

Xiaomi Redmi K40

Score

Camera	4.5
Performance	7.6
Screen	3.7
Battery	4.5
Connectivity	6.5
Appearance	7.4
Futures	4.5

Pros and cons

Good	Performance, Appearance
Normal	Camera, Battery, Connectivity, Futures
Bad	Screen

Xiaomi Redmi K40 specifications

Brand	Xiaomi
Model	Redmi K40 M2012K11AC HAYDN M2012K11G
Category	Mobile phones
Country	China

Weight	196 grams
Density	386 ppi
Memory size	6 Gigabytes
Battery capacity	4520 mAh

Width	76.4 milimeters
Height	163.7 milimeters
Thickness	7.83 milimeters
Weight	196 grams
Materials	Plastic, Glass, Splash resistant design
Colors	Black, White, Blue
Effective area	85 percents
Resistance certificate
Operating system	Android 11
Interface	MIUI V12
Google play	No

Screen type	OledSamsung E4
Screen futures	Hole-punch Notch, Refresh rate 120 Hz, Touch sampling rate 360 Hz, 5000000:1 contrast ratio, HDR10, DCI-P3, True Tone display, MEMC, Scratch resistant, 2.5D curved glass screen, Corning Gorilla Glass 5, Capacitive, Multi-touch, Frameless
Aspect Ratio	20 : 9
Screen resolution	1080 x 2400
Resolution type	FHD
Density	386 ppi

Audio futures	Dolby Atmos, Hi-Res Audio, Stereo Speakers
Headphone Jack	No
Radio	No

NFC	Yes
Voice over LTE	Yes
PC sync	Yes
OTA sync	Yes
Infrared	Yes
Tethering	Yes
Sim cards	Dual SIM
Wi-Fi standards	802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5GHz, 802.11ac
Wi-Fi futures	Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, Wi-Fi MiMO
Bluetooth version	Bluetooth 5.2
Navigation	GPS, A-GPS, GLONASS, Beidou, QZSS, Galileo, NavIC System

Memory size	6 Gigabytes
RAM type	RAM LPDDR5
CPU name	Qualcomm Snapdragon 870
CPU cores
GPU name	Qualcomm Adreno 650

Storage size	128 Gigabytes
ROM type	UFS Storage 3.1
Card slot	No
Slot type	Independent SD slot

Battery capacity	4520 mAh
Battery type	Li-Polymer
Battery futures	Non-removable, Supports QC3, / PD3.0 fast charging protocol
USB Type C	Yes
Fast charge	Yes

Fingerprint	Yes
Fingerprint location	On the side
Proximity	Yes
Light sensor	Yes
Accelerometer	Yes
Gyroscope	Yes
Gravity
Cooling system	Yes
Gaming buttons	No
Notifications

2G	CDMA (800) B2 (1900) B3 (1800) B5 (850) B8 (900)
3G	B1 (2100) B2 (1900) B4 (1700/2100 AWS A-F) B5 (850) B6 (800) B8 (900) B19 (800)
4G LTE	B1 (2100) B2 (1900) B3 (1800) B4 (1700/2100 AWS 1) B5 (850) B7 (2600) B8 (900) B18 (800) B19 (800) B26 (850) B28A (700) B34 (TDD 2100) B38 (TDD 2600) B39 (TDD 1900) B40 (TDD 2300) B41 (TDD 2500) B42 (TDD 3500)
5G	N1 (2100) N3 (1800) N28A (700) N41 (2500) N78 (3500) N79 (4700)

Benchmarks

Antutu _v8	Total Score	673 599 _28.02.2021
UL-Benchmark	Performance	8 561 _12.03.2021
Antutu _v9	Total Score	722 864 _02.05.2021
Geekbench _v5	Single-Core	992 _02.05.2021
Geekbench _v5	Multi-Core	3 301 _02.05.2021
AI-Benchmark	Score, K	71.5 _28.06.2021

Chipset

Model	Manufacturer	GPU	Cores	Speed
Snapdragon 870	Qualcomm	Qualcomm Adreno 650	8 cores	0 GHz - GHz

Cores list

A77 3.20	0 GHz

A77 2.4	0 GHz

A77 2.4	0 GHz

A77 2.4	0 GHz

A55 1.8	0 GHz

A55 1.8	0 GHz

A55 1.8	0 GHz

A55 1.8	0 GHz

Camera sensors

Main camera
Sensor model	IMX582 Exmor RS
Manufacturer	Sony
Resolution	48 MP
Aperture	ƒ/1.79
Sensor type	CMOS

Wide Angle + Macro
Sensor model	IMX355
Manufacturer	Sony
Resolution	8 MP
Aperture	ƒ/2.2
Sensor type	CMOS BSI

Macro lens
Sensor model	S5K5E9
Manufacturer	Samsung
Resolution	5 MP
Aperture	ƒ/2.4
Sensor type	ISOCELL

Selfie
Sensor model	S5K3T2
Manufacturer	Samsung
Resolution	20 MP
Aperture	-
Sensor type	ISOCELL

Supported bands

Carrier	2G GSM	3G UMTS	4G LTE
AT&T	B5 (850) B2 (1900)	B2 (1900) B5 (850)	B2 (1900) B4 (1700 / 2100 AWS 1) B17 (700) B30 (2300)
Bluegrass Cellular			B12 (700)
Boost Mobile			B2 (1900) B5 (850) B41 (TDD 2500) B25 (1900+) B26 (850)
C Spire			B2 (1900) B4 (1700 / 2100 AWS 1) B5 (850) B41 (TDD 2500) B12 (700)
Carolina West Wireless			B14 (700)
Cellular One	B5 (850)
Chariton Valley	B5 (850)		B14 (700)
Commnet Wireless	B5 (850) B2 (1900)
Cricket	B5 (850) B2 (1900)	B2 (1900) B5 (850)	B2 (1900) B4 (1700 / 2100 AWS 1) B17 (700) B30 (2300)
Indigo Wireless	B5 (850) B2 (1900)	B5 (850)
iWireless	B2 (1900)	B4 (1700 / 2100 AWS A-F)	B2 (1900) B4 (1700 / 2100 AWS 1)
Limitless Mobile	B2 (1900)		B2 (1900)
Lycamobile	B2 (1900)	B2 (1900) B4 (1700 / 2100 AWS A-F)	B2 (1900) B4 (1700 / 2100 AWS 1) B12 (700)
Metro	B2 (1900)	B2 (1900) B4 (1700 / 2100 AWS A-F)	B2 (1900) B4 (1700 / 2100 AWS 1) B12 (700) B66 (1700 / 2100) B71 (600)
Pine Cellular	B5 (850)
Plateau Wireless	B5 (850)	B4 (1700 / 2100 AWS A-F) B5 (850)
Sprint			B2 (1900) B5 (850) B41 (TDD 2500) B25 (1900+) B26 (850)
Straight Talk	B5 (850) B2 (1900)	B2 (1900) B4 (1700 / 2100 AWS A-F) B5 (850)	B2 (1900) B4 (1700 / 2100 AWS 1) B5 (850) B41 (TDD 2500) B12 (700) B13 (700) B17 (700) B26 (850)
T-Mobile	B2 (1900)	B2 (1900) B4 (1700 / 2100 AWS A-F)	B2 (1900) B4 (1700 / 2100 AWS 1) B12 (700) B66 (1700 / 2100) B71 (600)
Ting		B2 (1900) B4 (1700 / 2100 AWS A-F)	B2 (1900) B4 (1700 / 2100 AWS 1) B5 (850) B17 (700)
Union Telephone	B5 (850) B2 (1900)
US Cellular	B5 (850) B2 (1900)	B2 (1900) B5 (850)	B2 (1900) B4 (1700 / 2100 AWS 1) B5 (850) B12 (700)
Verizon	B5 (850) B2 (1900)	B2 (1900) B5 (850)	B2 (1900) B4 (1700 / 2100 AWS 1) B13 (700)
Viaero	B5 (850) B2 (1900)	B2 (1900) B5 (850)	B2 (1900) B4 (1700 / 2100 AWS 1) B14 (700)
Virgin Mobile			B2 (1900) B5 (850) B26 (850) B25 (1900+)
West Central Wireless	B5 (850)	B2 (1900) B5 (850)

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