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Xiaomi Redmi K20

Realme X

Network
Technology	GSM / HSPA / LTE	GSM / CDMA / HSPA / LTE
2G bands	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
		CDMA 800 & TD-SCDMA - China
3G Network	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1700(AWS) / 2100
4G Network	1, 3, 5, 7, 8, 34, 38, 39, 40, 41	1, 3, 4, 5, 8, 34, 38, 39, 40, 41
Speed	HSPA, LTE	HSPA 42.2/11.5 Mbps, LTE (2CA) Cat6 300/75 Mbps

Launch
Announced	2019, May	2019, May
Status	Available. Released 2019, June	Available. Released 2019, July

Body
Dimensions	156.7 x 74.3 x 8.8 mm (6.17 x 2.93 x 0.35 in)	161.2 x 76 x 9.4 mm (6.35 x 2.99 x 0.37 in)
Weight	191 g (6.74 oz)	191 g (6.74 oz)
Build	Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame	Glass front (Gorilla Glass 5), plastic back, plastic frame
SIM	Dual SIM (Nano-SIM, dual stand-by)	Dual SIM (Nano-SIM, dual stand-by)

Display
Type	Super AMOLED, HDR	AMOLED
Size	6.39 inches, 100.2 cm2 (~86.1% screen-to-body ratio)	6.53 inches, 105.2 cm2 (~85.9% screen-to-body ratio)
Resolution	1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)	1080 x 2340 pixels, 19.5:9 ratio (~394 ppi density)
Protection	Corning Gorilla Glass 5	Corning Gorilla Glass 5

Platform
OS	Android 9.0 (Pie), upgradable to Android 10, MIUI 12	Android 9.0 (Pie), upgradable to Android 10, Realme UI
Chipset	Qualcomm SDM730 Snapdragon 730 (8 nm)	Qualcomm SDM710 Snapdragon 710 (10 nm)
CPU	Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)	Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
GPU	Adreno 618	Adreno 616

Memory
Card slot	No	No
Internal	64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM	64GB 4GB RAM, 64GB 6GB RAM, 128GB 4GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
	UFS 2.1	UFS 2.1

Main Camera
Modules	48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, 53mm (telephoto), 1/4.0", 1.12µm, PDAF, 2x optical zoom 13 MP, f/2.4, 12mm (ultrawide), 1/3.1", 1.12µm	48 MP, f/1.7, (wide), 26mm (wide), 1/2.0", 0.8µm, PDAF 5 MP, f/2.4, (depth)
Features	Dual-LED flash, HDR, panorama	LED flash, HDR
Video	4K@30fps, 1080p@30/120/240fps, 1080p@960fps	4K@30fps, 1080p@30fps (gyro-EIS), 1080p@120fps, 720p@960fps

Selfie Camera
Modules	Motorized pop-up 20 MP, f/2.2, (wide), 1/3.4", 0.8µm	Motorized pop-up 16 MP, f/2.0, 25mm (wide), 1/3.06", 1.0µm
Features	HDR	HDR
Video	1080p@30fps	1080p@30fps

Sound
Loudspeaker	Yes	Yes
3.5mm jack	Yes	Yes
	24-bit/192kHz Hi-Res audio

Comms
WLAN	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth	5.0, A2DP, LE, aptX HD	5.0, A2DP, LE, aptX HD
Positioning	GPS, GLONASS, GALILEO, BDS	GPS, GLONASS, BDS
NFC	Yes (China only)	No
Infrared port	No	No
Radio	FM radio	FM radio
USB	USB Type-C 2.0, OTG	USB Type-C

Features
Sensors	Fingerprint (under display, optical), accelerometer, gyro, proximity, compass	Fingerprint (under display, optical), accelerometer, gyro, proximity, compass

Battery
Type	Li-Po 4000 mAh, non-removable	3765 mAh, non-removable
Charging	18W wired	20W wired, 55% in 30 min (advertised)

Misc
Colors	Carbon black, Red flame, Glacier blue, Pearl White	Steam white, Punk Blue
SAR	1.07 W/kg (head)     0.72 W/kg (body)
Models	M1903F10I	RMX1901, RMX1903
Price	About 260 EUR	About 160 EUR

Tests
Performance		GeekBench: 5915 (v4.4)
Display		Contrast ratio: Infinite (nominal)
Loudspeaker		-28.7 LUFS (Average)
Audio quality		Noise -92.9dB / Crosstalk -93.3dB
Battery (old)		Endurance rating 86h