Xiaomi Mi 8 vs Samsung Galaxy A21s Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

	7.5
Xiaomi Mi 8	Samsung Galaxy A21s
Released · Jun 05, 2018	Released · Jun 19, 2020
6.2-inch	6.5-inch
Dual camera	Quad camera
6GB · 256GB	3GB · 32GB
3400 mAh	5000 mAh

Design

Dimensions
6.10 x 2.94 x 0.30 inches 154.9 x 74.8 x 7.6 mm	6.44 x 2.96 x 0.35 inches 163.7 x 75.3 x 8.9 mm
Weight
6.17 oz (175.0 g)	6.77 oz (192.0 g)
Materials
Back: Glass (Corning Gorilla Glass 5)
Biometrics
2D Face unlock, Fingerprint (touch)	2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Blue, White	Black, White, Blue, Red

Display

Size
6.2-inch	6.5-inch
Resolution
2248x1080px, 402 PPI	1600x720px, 20:9 ratio, 270 PPI
Technology
AMOLED	TFT
Screen-to-body
83.66 %	82.94 %
Peak brightness
600 cd/m2 (nit)
Features
HDR support, Pressure-sensitive, Oleophobic coating, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor	Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 845 SDM845 (10 nm)	Samsung Exynos 850
Processor
Octa-core 2800 MHz Kryo 385	Octa-core 8x 2.0GHz Cortex-A55
GPU
Adreno 630	Mali-G76
RAM
6GB (LPDDR4)	3GB (LPDDR4)
Internal storage
256GB	32GB (eMMC 5.1), available to use: 19.5 GB
Storage expansion
	microSDXC up to 512 GB
OS
Android (10, 9.0 Pie, 8.0 Oreo)	Android (10), Samsung One UI

Battery

Capacity
3400 mAh	5000 mAh
Type
Li - Polymer	Li - Polymer
Charging
Qualcomm Quick Charge 4+	Fast charging

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

11h 9min

Gaming

7h 48min

Camera

Rear
Dual camera	Quad camera
Main camera
12 MP (OIS, PDAF) Aperture size: F1.8 Sensor size: 1/2.55" Pixel size: 1.4 μm	48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
12 MP (Telephoto, Autofocus) Optical zoom: 2.0x Aperture size: F2.4 Focal Length: 56 mm Sensor size: 1/3.4" Pixel size: 1 μm	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.12 μm
Third camera
	2 MP (Macro) Aperture size: F2.4
Fourth camera
	2 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps) Video calling, Video sharing	1920x1080 (Full HD) (30 fps)
Front
20 MP (HDR)	13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 a,b,g,n,ac,dual-band MIMO, Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
Type-C	Type-C, USB 2.0
Location
GPS, A-GPS, Glonass, BeiDou	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer	Accelerometer, Gyroscope
Other
NFC, VoIP, Tethering, Computer sync, OTA sync	NFC

Multimedia

Headphones
No 3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD)	Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+)	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)	Bands 1(2100), 2(1900), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM
HD Voice
Yes
VoLTE
Yes

Buyers information

MSRP
	€ 240
In The Box
Mi 8 Protective cover / Power adapter / USB Type-C cable / Type-C to audio converter / SIM insertion tool / User guide

Availability

Officially announced
May 31, 2018	May 15, 2020

Alternative variants

with 64 GB storage


Internal storage	64GB

with 4GB RAM


RAM	4GB
Internal storage	64GB

with 128 GB storage


Internal storage	128GB

with 6GB RAM


RAM	6GB
Internal storage	64GB


RAM	8GB
Internal storage	128GB
Capacity	3000 mAh
Weight	6.24 oz (177.0 g)
Biometrics	Optical in-screen fingerprint

Links

Full specifications
Xiaomi Mi 8 Specs	Samsung Galaxy A21s Specs
PhoneArena Review
	Samsung Galaxy A21s Review