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Samsung Galaxy M21 vs Samsung Galaxy A51

Samsung Galaxy M21 SamsungGalaxy M21
VS
Samsung Galaxy A51 SamsungGalaxy A51

The third device is shown on desktop screens only

General

Device Type
Smart Phone
Smart Phone
Device Name
SM-M215FSM-M215F/DSSM-M215F/DSN
—
Announced
March 2020
December 2019
Released
March 2020
December 2019
Colors
Green
WhitePink
On both: Black, Blue

Design

Length
159 mm (6.26 in)
158.5 mm (6.24 in)
Width
75.1 mm (2.96 in)
73.6 mm (2.90 in)
Thickness
8.9 mm (0.35 in)
7.9 mm (0.31 in)
Weight
188 g (6.63 oz)
172 g (6.07 oz)
Materials
Glass front (Gorilla Glass 3)Plastic backPlastic frame
Same on both

Network

2G Network
Yes
Yes
3G Network
Yes
Yes
4G Network
Yes
Yes
GPRS
Yes
Yes
EDGE
Yes
Yes
SIM
Nano SIM
Nano SIM
Multi SIM
Single SIM or Dual SIM
Single SIM or Dual SIM
Speed
3G Up to 42 MB4G Up to 600 MB
Same on both

Display

Display Type
Super AMOLED
Super AMOLED
Size
6.4 Inches
6.5 Inches
Resolution
1080x2340 Pixels (FHD+)
1080x2400 Pixels (FHD+)
Screen Ratio
84.2%
87.4%
Aspect Ratio
19.5:9
20:9
Pixel Density
403 PPI
405 PPI
Brightness Level
420 Nits
—
Display Protection
Corning Gorilla Glass 3
Corning Gorilla Glass 3
Features
Water Drop NotchDark Mode
Hole-punch NotchFrameless
On both: Always-on Display, Capacitive, Multi-touch, 16M Colors

Hardware

Chipset
Samsung Exynos 9611
Samsung Exynos 9611
Manufacturing Technology
10 nm
10 nm
CPU Type
Octa-core
Octa-core
CPU
Octa-core:Quad-core 2.3 GHzQuad-core 1.7 GHz
Same on both
GPU
Mali-G72 MP3
Mali-G72 MP3
RAM (Memory)
4/6 GB
4/6/8 GB4 GB (128 GB)8 GB (128 GB)8 GB (256 GB)
On both: 4 GB (64 GB), 6 GB (128 GB)
Internal Storage
64/128 GB
64/128/256 GB
Storage Type
UFS 2.1
UFS 2.0
Ram Type
LPDDR4x
LPDDR4x
Card Slot
Yes - MicroSD
Yes - MicroSD

Software

OS
Android 10
Android 9.0 (Pie)
Update To
Android 11
Android 11
User Interface
One UI 3.0
One UI 3.0

Main camera

Triple
First Camera: 48 MP (Standard)Second Camera: 8 MP (Ultrawide)Third Camera: 5 MP (Depth)
—
Four
—
First Camera: 48 MP (Standard)Second Camera: 12 MP (Ultrawide)Third Camera: 5 MP (Macro)Fourth Camera: 5 MP (Depth)
Aperture Size
Third Camera: F/2.2
Third Camera: F/2.4Fourth Camera: F/2.4
On both: First Camera: F/2.0, Second Camera: F/2.2
Sensor
—
Sony IMX582
Video
FHD 1080P@30fps
FHD 1080P@30/120fps
On both: 4K 2160P@30fps, Slow Motion, Electronic Stabilization (EIS)
Flash
Yes
Yes
More details (1)Camera Features
Camera Features
No extras
Night ModeAI Scene Detection
On both: Autofocus (AF), Portrait Mode, Pro Mode, Digital Zoom, Continuous shooting, Panorama, Exposure compensation, Face detection, Geotagging, HDR, ISO settings, Scene mode, Self-timer, Touch focus, White balance settings

Selfie Camera

Camera
20 MP
32 MP
Aperture Size
F/2.2
F/2.2
Video
FHD 1080P@30fps
4K 2160P@30fpsFHD 1080P@30fps
Flash
No
No
More details (1)Camera Features
Camera Features
Face DetectionPortrait ModeBeauty ModeGesture ShotHDR
Portrait ModeBeauty ModeFace DetectionGesture ShotHDR

Connectivity

Wi-Fi
Wi-Fi 802.11a/b/g/n/acDual-bandWi-Fi DirectHotspot
Same on both
Bluetooth
5.0A2DPLE
Same on both
Location
GPSA-GPSGLONASSGALILEOBDS
Same on both
NFC
—
Yes
USB
USB Type-C 2.0
USB Type-C 2.0

Media

Loudspeaker
Yes
Yes
3.5mm jack
Yes
Yes
FM Radio
Yes - RDS & Recording
Yes

Other specifications

Sensors
AccelerometerGyroscopeProximityCompass
Same on both
Lock Type
Fingerprint (Rear-mounted)
Fingerprint (Under Display)
On both: Facial Recognition, Pattern, PIN, Password
Box Contents
DeviceUSB CablePower Adapter (15 W)HeadphonesSIM Eject ToolQuick start guide
Same on both

Charging and Battery

Fast Charging
15 W
Yes - 15 W
Capacity
6000 mAh
4000 mAh

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