Samsung Galaxy A21s vs Samsung Galaxy M31s

Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone specs comparison tool or pick a popular device from the ones below.

VIEW ON AMAZON

Display

Size

6.5 inches
6.5 inches

Resolution

1600 x 720 pixels, 20:9 ratio,
270 PPI
2340 x 1080 pixels, 20:9 ratio,
396 PPI

Technology

TFT
Super AMOLED

Screen-to-body

82.94 %
86.62 %

Features

Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip

Samsung Exynos 850
Samsung Exynos 9611

Processor

Octa-core, 2000 MHz, Arm Cortex-A55, 64-bit
Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm

GPU

Mali-G76
Mali-G72 MP3

RAM

3GB LPDDR4
6GB LPDDR4

Internal storage

32GB (eMMC 5.1), available to use: 19.5 GB
128GB

Storage expansion

microSDXC up to 512 GB
microSDXC up to 512 GB

OS

Android (10), Samsung One UI
Android (10), Samsung One UI

Battery

Capacity

5000 mAh
6000 mAh

Type

Li - Polymer, Not user replaceable
Not user replaceable

Charging

Fast charging
Fast charging, Reverse charging

Max charge speed

 
Wired: 25.0W

Camera

Rear

Quad camera
Quad camera

Main camera

48 MP (PDAF)
64 MP (PDAF)

Specifications

Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.8; Pixel size: 0.8 μm

Second camera

8 MP (Ultra-wide)
12 MP (Ultra-wide)

Specifications

Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.2

Third camera

2 MP (Macro)
5 MP (Macro)

Specifications

Aperture size: F2.4
 

Fourth camera

2 MP (Depth information)
5 MP (Depth information)

Specifications

Aperture size: F2.4
 

Video recording

1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD)

Features

 
Hyperlapse

Front

13 MP
32 MP

Design

Dimensions

6.44 x 2.96 x 0.35 inches (163.7 x 75.3 x 8.9 mm)
6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)

Weight

6.77 oz (192.0 g)
the average is 6.2 oz (176 g)
 

Biometrics

2D Face unlock, Fingerprint (touch)
Fingerprint (touch)

Colors

Black, White, Blue, Red
Mirage black, Mirage blue

Cellular

LTE (FDD)

Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
 

LTE (TDD)

Bands 38(2600), 40(2300), 41(2600+)
 

UMTS

850, 900, 1900, 2100 MHz
 

Data Speed

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

Yes
Yes

SIM type

Nano SIM
Nano SIM

Multimedia

Headphones

3.5mm jack
 

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Screen mirroring

Wireless screen share
Wireless screen share

Connectivity & Features

Bluetooth

5.0
5.0

Wi-Fi

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 (reversible), USB 2.0
Type-C (reversible)

Features

Charging
Charging, OTG

Location

GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Cell ID, Wi-Fi positioning

Sensors

Accelerometer, Gyroscope
Accelerometer

Other

NFC
 
This copy is for your personal, non-commercial use only. You can order presentation-ready copies for distribution to your colleagues, clients or customers at https://www.parsintl.com/phonearena or use the Reprints & Permissions tool that appears at the bottom of each web page. Visit https://www.parsintl.com/ for samples and additional information.
FCC OKs Cingular's purchase of AT&T Wireless