Samsung Galaxy A21s vs Samsung Galaxy M51 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
Samsung Galaxy A21s
Samsung Galaxy A21s Samsung Galaxy M51
Released · Jun 19, 2020
Released · Sep 11, 2020
6.5-inch · 1600x720px
6.7-inch · 2340x1080px
Quad camera
Quad camera
3GB · 32GB
6GB · 128GB
5000 mAh
7000 mAh

Design

Dimensions
6.44 x 2.96 x 0.35 inches
163.7 x 75.3 x 8.9 mm
6.45 x 3.00 x 0.37 inches
163.9 x 76.3 x 9.5 mm
Weight
6.77 oz (192.0 g) 7.51 oz (213.0 g)
Materials
Back: Plastic
Frame: Plastic
Biometrics
2D Face unlock, Fingerprint (touch) Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Black, White, Blue, Red Black, White

Display

Size
6.5-inch 6.7-inch
Resolution
1600x720px, 20:9 ratio, 270 PPI 2340x1080px, 20:9 ratio, 385 PPI
Technology
TFT Super AMOLED Plus
Screen-to-body
82.94 % 88.27 %
Features
Proximity sensor Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip
Samsung Exynos 850 Qualcomm Snapdragon 730 SM7150-AA (8 nm)
Processor
Octa-core
8x 2.0GHz Cortex-A55
Octa-core
2x 2.2GHz Kryo 470 + 6x 1.8GHz Kryo 470
GPU
Mali-G76 Adreno 618
RAM
3GB (LPDDR4) 6GB (LPDDR4)
Internal storage
32GB (eMMC 5.1), available to use: 19.5 GB 128GB, available to use: 106 GB
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 7000 mAh
Type
Li - Polymer
Charging
Fast charging Fast charging, Reverse wired charging
Charge speed
Wired: 25.0W
PhoneArena Battery Tests
Battery Life Estimate
Untested
Browsing
Untested
Video
11h 9min
Gaming
7h 48min
Battery Life Estimate
Untested
Browsing
Untested
Video
Untested
Gaming
Untested

Camera

Rear
Quad camera Quad camera
Main camera
48 MP (PDAF)
Aperture size: F2.0
Focal length: 26 mm
Sensor size: 1/2"
Pixel size: 0.8 μm
64 MP (PDAF)
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.76"
Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide)
Aperture size: F2.2
Sensor size: 1/4"
Pixel size: 1.12 μm
12 MP (Ultra-wide)
Aperture size: F2.2
Third camera
2 MP (Macro)
Aperture size: F2.4
5 MP (Macro)
Aperture size: F2.4
Fourth camera
2 MP (Depth information)
Aperture size: F2.4
5 MP (Depth information)
Aperture size: F2.4
Flash
LED LED
Video recording
1920x1080 (Full HD) (30 fps) 3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD)
Front
13 MP, Video capture: 1920x1080 (Full HD) 32 MP (HDR), Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0 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, USB 2.0 Type-C, USB 2.0
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope Accelerometer, Gyroscope, Compass
Other
NFC NFC

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Loudspeaker
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM, Stereo, RDS
Additional microphone(s)
Noise cancellation

Cellular

4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT) 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), 26(850+), 28(700 APT), 66(AWS-3)
4G (TDD)
Bands 38(2600), 40(2300), 41(2600+) Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 5(850), 8(900) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
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, UMTS
Dual SIM
Yes Yes
SIM type
Nano SIM Nano SIM

Buyers information

MSRP
€ 240 € 360

Availability

Officially announced
May 15, 2020 Aug 31, 2020

Alternative variants

with 4GB RAM
RAM 4GB
Internal storage 64GB
with 6GB RAM
RAM 6GB
Internal storage 64GB
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