Samsung Galaxy A21s vs Xiaomi Redmi Note 8 Pro

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Galaxy A21s compared with Redmi Note 8 Pro

	SamsungGalaxy A21s	XiaomiRedmi Note 8 Pro
Overview
Released
Released	May 2020	September 2019
Display
Screen size
Screen size	6.5″	6.53″
Resolution
Resolution	1600 × 720	2340 × 1080 (better)
Sharpness
Sharpness	270 pixels per inch	395 pixels per inch (better)
Panel
Panel	LCD	LCD
Display type
Display type	HD+ TFT Infinity-O display, 20:9 aspect ratio	IPS LCD panel, as identified by Android Authority; Dot Drop display, 91.4% screen-to-body ratio and 1,500:1 typical contrast
Brightness detail
Brightness detail	–	500 nits typical and 420 nits minimum; peak brightness not published
Screen protection
Screen protection	–	Corning Gorilla Glass 5 front and back; anti-oil and anti-fingerprint coating
Display features
Display features	–	84% NTSC typical, HDR, standard/sunshine/night modes, colour-temperature adjustment and 256-level reading mode certified by TÜV Rheinland
Performance
Chip
Chip	Exynos 850	MediaTek Helio G90T
Memory
Memory	3 GB – 6 GB	6 GB
Storage
Storage	32 GB, 64 GB	64 GB, 128 GB (better)
CPU
CPU	–	Two Cortex-A76 cores at 2.05 GHz and six Cortex-A55 cores at 2.0 GHz; 12 nm process identified by Android Authority
GPU
GPU	–	ARM Mali-G76 MC4
Storage type
Storage type	32 GB in the UK; dedicated microSD slot up to 512 GB	Dual-channel 6 GB LPDDR4X at 2,133 MHz and 64/128 GB UFS 2.1 storage; microSD up to 256 GB in Vfat format
Cooling
Cooling	–	LiquidCool system for SoC and charging IC; maker laboratory claim of 4–6°C lower core temperature than a phone without it
Cameras
Main camera
Main camera	48 MP	64 MP (better)
Ultra wide camera
Ultra wide camera	8 MP	8 MP
Telephoto camera
Telephoto camera	None	None
Optical zoom
Optical zoom	None	None
Front camera
Front camera	13 MP	20 MP (better)
Main camera
Main camera	48 MP, F2.0	64 MP, f/1.89, 1/1.7-inch CMOS sensor, 0.8 µm pixels or 4-in-1 binning to 1.6 µm, 79° field of view and phase/contrast detection autofocus
Ultra wide camera
Ultra wide camera	8 MP, F2.2, 123-degree field of view	8 MP, f/2.2, 1.12 µm pixels and 120° field of view
Front camera
Front camera	13 MP, F2.2	20 MP, f/2.0 and 0.9 µm pixels; panorama selfie, palm shutter, HDR and portrait mode
Zoom
Zoom	–	Up to 10× digital zoom; no optical telephoto camera
Video recording
Video recording	–	4K at 30 fps, Full HD at 30/60 fps and HD at 30 fps; ultra wide Full HD/HD at 30 fps; slow motion Full HD at 120 fps or HD at 120/240/960 fps; macro video and time-lapse
Front video
Front video	–	Full HD at 30 fps; HD at 30/60 fps; short video and beauty modes
Camera features
Camera features	2 MP F2.4 macro and 2 MP F2.4 depth cameras; 1080p video at 30 fps	Additional 2 MP macro camera with 2 cm close-up capability and 1.75 µm pixels, plus 2 MP depth sensor with 1.75 µm pixels; nightscape, AI scene detection, ultra wide distortion correction, Pro, portrait, tilt-shift and panorama modes
Battery and charging
Battery
Battery	5,000 mAh (better)	4,500 mAh
Wired charging
Wired charging	Up to 15 W	Up to 18 W (better)
Wireless charging
Wireless charging	None	None
Battery life detail
Battery life detail	–	4,500 mAh typical; maker laboratory claim of up to 10 hours gaming
Wired charging
Wired charging	–	18 W wired charging and included 18 W adaptor; maker laboratory claim of full charge in two hours
Design
Type
Type	Standard	Standard
Weight
Weight	192 g (better)	199.8 g
Thickness
Thickness	8.9 mm	8.79 mm (better)
Height × width
Height × width	163.6 × 75.3 mm	161.35 × 76.4 mm
Materials
Materials	Glossy plastic body	Four-sided 3D curved glass back; plastic frame, as described by Android Authority
Colours
Colours	Black, white and blue in the UK	Pearl White, Forest Green, Mineral Grey, Dark Blue and Coral Orange; overview names the blue option Deep Blue
Water resistance detail
Water resistance detail	–	Maker splash-proof coating and rubber connector seals; no published IP rating
Biometrics
Biometrics	Rear fingerprint reader and face recognition	Rear fingerprint reader and face unlock, as described by Android Authority
Sensors
Sensors	–	Distance, in-screen ambient light, accelerometer, gyroscope, compass, vibration motor, fingerprint sensor and IR blaster
Speakers
Speakers	–	1217 ultra-linear speaker with 0.4 mm maximum amplitude and 10 V Smart PA; 3.5 mm headphone socket
Software
Operating system
Operating system	Android	Android
Software at launch
Software at launch	Android 10 with One UI Core	MIUI 10 based on Android 9 Pie, as reported by both reviews; MI Turbo and Game Turbo 2.0
In the box
In the box	–	Phone, power adaptor, protective cover, USB-C cable, SIM tool, user guide and warranty card
Connectivity
Mobile network
Mobile network	–	Dual 4G with operator-dependent VoLTE; LTE FDD B1/B2/B3/B4/B5/B7/B8/B20/B28 and TDD B38/B40; WCDMA B1/B2/B4/B5/B8 and GSM B2/B3/B5/B8
SIM
SIM	Dual nano-SIM plus dedicated microSD slot on SM-A217F	Hybrid nano-SIM plus nano-SIM/microSD tray on UK model; India's dedicated microSD arrangement described by Android Central is a regional difference
Wi-Fi
Wi-Fi	Wi-Fi 802.11a/b/g/n/ac at 2.4 and 5 GHz	Wi-Fi 802.11 a/b/g/n/ac, 2.4/5 GHz and Wi-Fi Direct; X antenna design
Bluetooth
Bluetooth	Bluetooth 5.0	Bluetooth 5.0; Android Authority confirms SBC, AAC and LDAC and warns displayed aptX options lack the required libraries
NFC
NFC	–	NFC with Google Pay
USB
USB	USB Type-C 2.0; 3.5 mm headphone socket	USB-C
Positioning
Positioning	GPS, GLONASS, BeiDou and Galileo	GPS, A-GPS, Galileo, GLONASS and BeiDou