Xiaomi Mi A1 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 A1	Samsung Galaxy A21s
Released · Sep 12, 2017	Released · Jun 19, 2020
5.5-inch · 1920x1080px	6.5-inch · 1600x720px
Dual camera	Quad camera
4GB · 64GB	3GB · 32GB
3080 mAh	5000 mAh

Design

Dimensions
6.12 x 2.98 x 0.29 inches 155.4 x 75.8 x 7.3 mm	6.44 x 2.96 x 0.35 inches 163.7 x 75.3 x 8.9 mm
Weight
5.82 oz (165.0 g)	6.77 oz (192.0 g)
Materials
Back: Metal
Biometrics
Fingerprint (touch)	2D Face unlock, Fingerprint (touch)
Features
Touch sensitive control keys
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Black, Gold, Pink	Black, White, Blue, Red

Display

Size
5.5-inch	6.5-inch
Resolution
1920x1080px, 401 PPI	1600x720px, 20:9 ratio, 270 PPI
Technology
IPS LCD	TFT
Screen-to-body
70.87 %	82.94 %
Peak brightness
450 cd/m2 (nit)
Features
Oleophobic coating, Ambient light sensor, Proximity sensor	Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 625 8953 (14 nm)	Samsung Exynos 850
Processor
Octa-core 2000 MHz ARM Cortex-A53	Octa-core 8x 2.0GHz Cortex-A55
GPU
Adreno 506	Mali-G76
RAM
4GB (LPDDR3)	3GB (LPDDR4)
Internal storage
64GB	32GB (eMMC 5.1), available to use: 19.5 GB
Storage expansion
microSDXC up to 256 GB	microSDXC up to 512 GB
OS
Android (9.0 Pie, 8.1 Oreo, 8.0 Oreo, 7.1 Nougat)	Android (10), Samsung One UI

Battery

Capacity
3080 mAh	5000 mAh
Type
Li - Ion	Li - Polymer
Charging
Fast charging	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 (PDAF) Aperture size: F2.2 Focal length: 26 mm Pixel size: 1.25 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: F2.6 Focal Length: 50 mm 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
Dual LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps), 1280x720 (HD) (120 fps) Video calling, Video sharing	1920x1080 (Full HD) (30 fps)
Front
5 MP, Video capture: 1920x1080 (Full HD)	13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
4.2	5.0
WLAN
802.11 a,b,g,n,ac,dual-band 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, Hall (for flip covers)	Accelerometer, Gyroscope
Other
Infrared, VoIP, Tethering, Computer sync, OTA sync	NFC

Multimedia

Headphones
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
Radio
FM
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 3(1800), 5(850)	Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 40(2300), 41(2600+)	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 5(850), 8(900), 2(1900), 1(2100)	Bands 1(2100), 2(1900), 5(850), 8(900)
Data Speed
LTE, HSPA, HSUPA	LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM

Buyers information

MSRP
	€ 240

Availability

Officially announced
Sep 05, 2017	May 15, 2020

Alternative variants

with 4GB RAM


RAM	4GB
Internal storage	64GB

with 6GB RAM


RAM	6GB
Internal storage	64GB

Links

Full specifications
Xiaomi Mi A1 Specs	Samsung Galaxy A21s Specs
PhoneArena Review
	Samsung Galaxy A21s Review
User Reviews
Xiaomi Mi A1 User Reviews