Xiaomi Redmi K40S vs Xiaomi Poco F4

Phones Images

PHONES
Phone Names	Xiaomi Redmi K40S	Xiaomi Poco F4

Network
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands	1, 2, 3, 4, 5, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42	1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 40, 41
5G bands	1, 3, 5, 8, 28, 38, 40, 41, 77, 78 SA/NSA	1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 77, 78 SA/NSA
Speed	HSPA, LTE, 5G	HSPA, LTE, 5G
Technology	GSM / CDMA / HSPA / CDMA2000 / LTE / 5G	GSM / HSPA / LTE / 5G
	CDMA2000 1x	-

Launch
Announced	2022, March 17	2022, June 23
Status	Available. Released 2022, March 17	Available. Released 2022, June 27

Body
Build	Glass front (Gorilla Glass 5), plastic back	Glass front (Gorilla Glass 5), glass back
Dimensions	163.2 x 76 x 7.7 mm (6.43 x 2.99 x 0.30 in)	163.2 x 76 x 7.7 mm (6.43 x 2.99 x 0.30 in)
SIM	Nano-SIM + Nano-SIM	Nano-SIM + Nano-SIM
Weight	195 g (6.88 oz)	195 g (6.88 oz)
	Splash resistant	IP53, dust and splash resistant

Display
Protection	Corning Gorilla Glass 5	Corning Gorilla Glass 5
Resolution	1080 x 2400 pixels, 20:9 ratio (~395 ppi density)	1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
Size	6.67 inches, 107.4 cm2 (~86.6% screen-to-body ratio)	6.67 inches, 107.4 cm2 (~86.6% screen-to-body ratio)
Type	AMOLED, 120Hz, HDR10+, 1300 nits (peak)	AMOLED, 120Hz, HDR10+, Dolby Vision, 900 nits (HBM), 1300 nits (peak)

Platform
CPU	Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)	Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
Chipset	Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)	Qualcomm SM8250-AC Snapdragon 870 5G (7 nm)
GPU	Adreno 650	Adreno 650
OS	Android 12, MIUI 13	Android 12, upgradable to Android 13, MIUI 14.2 for POCO

Memory
Card slot	No	No
Internal	128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM	128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
	UFS 3.1	UFS 3.1

Main Camera
Features	Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama	LED flash, HDR, panorama
Single	20 MP, (wide)	-
Triple	48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF, OIS 8 MP, 119˚ (ultrawide) 2 MP (macro)	64 MP, f/1.8, (wide) 1/2.0", 0.7µm, PDAF, OIS 8 MP, f/2.2, 119˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro)
Video	4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS	4K@30/60fps, 1080p@30/60fps

Selfie camera
Single	20 MP, (wide)	20 MP, f/2.5, (wide), 1/3.06", 1.0µm
Video	1080p@30/120fps	1080p@30fps

Sound
3.5mm jack	No	No
35mm jack	No	No
Loudspeaker	Yes, with stereo speakers	Yes, with stereo speakers
	24-bit/192kHz audio	24-bit/192kHz audio

Comms
Bluetooth	5.2, A2DP, LE	5.2, A2DP, LE
Infrared port	-	Yes
NFC	Yes	Yes (market/region dependent)
Positioning	GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)	GPS (L1+L5), GLONASS (L1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
Radio	No	No
USB	USB Type-C 2.0, OTG	USB Type-C 2.0, OTG
WLAN	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct

Features
Sensors	Fingerprint (side-mounted), accelerometer, gyro, proximity, compass	Fingerprint (side-mounted), accelerometer, gyro, proximity, compass

Battery
Charging	67W wired, PD3.0, QC3, 100% in 38 min	67W wired, PD3.0, QC3, 100% in 38 min
Type	Li-Po 4500 mAh	Li-Po 4500 mAh

Misc
Colors	Black, Gray, Blue, Green	Moonlight Silver, Night Black, Nebula Green
Models	-	22021211RG, 22021211RI
Price	About 260 EUR	₹ 16,999

Tests
Battery life	-	Endurance rating 101h
Camera	-	Photo / Video
Display	-	Contrast ratio: Infinite (nominal)
Loudspeaker	-	-26.1 LUFS (Good)
Performance	-	AnTuTu: 590961 (v8), 698586 (v9) GeekBench: 3190 (v5.1) GFXBench: 49fps (ES 3.1 onscreen)

OUR TESTS
Battery (old)	-	Endurance rating 101h
Camera	-	Photo / Video
Display	-	1003 nits max brightness (measured)
Loudspeaker	-	-26.1 LUFS (Good)
Performance	-	AnTuTu: 590961 (v8), 698586 (v9) GeekBench: 3190 (v5.1) GFXBench: 49fps (ES 3.1 onscreen)