Samsung Galaxy A21s vs Samsung Galaxy A12 vs Samsung Galaxy A02s

Compare phone and tablet specifications of up to three devices at once.

Display

Size:

6.5 inches
6.5 inches
6.5 inches

Resolution:

1600 x 720 pixels, 20:9 ratio, 270 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI

Technology:

TFT
LCD
IPS LCD

Screen-to-body:

82.94 %
85.80 %
81.80 %

Features:

Proximity sensor
Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware

System chip:

Samsung Exynos 850
Mediatek Helio P35 MT6765
Qualcomm Snapdragon 450 SDM450

Processor:

Octa-core, 2000 MHz, Arm Cortex-A55, 64-bit
Octa-core, 2350 MHz, Cortex-A53, 64-bit, 12 nm
Octa-core, 1800 MHz, Cortex-A53, 64-bit, 14 nm

GPU:

Mali-G76
PowerVR GE8320
Adreno 506

RAM:

3GB LPDDR4
4GB LPDDR4
3GB

Internal storage:

32GB (eMMC 5.1), available to use: 19.5 GB
64GB (eMMC 5.1), available to use: 48.2 GB
32GB (eMMC 5.1), available to use: 20.5 GB

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 1024 GB
microSDXC up to 1024 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10), Samsung One UI
Android (10), Samsung One UI UI
Android (11, 10)

Battery

Capacity:

5000 mAh
5000 mAh
5000 mAh

Type:

Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable

Battery life test results:

Charging:

Fast charging
Samsung Adaptive Fast Charging
Samsung Adaptive Fast Charging

Max charge speed:

Wired: 15.0W
Wired: 15.0W

Camera

Rear:

Quad camera
Quad camera
Triple camera

Main camera:

48 MP (PDAF)
48 MP (Autofocus)
13 MP (Autofocus)

Specifications:

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

Second camera:

8 MP (Ultra-wide)
5 MP (Ultra-wide)
2 MP (Macro)

Specifications:

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

Third camera:

2 MP (Macro)
2 MP (Macro)
2 MP (Depth information)

Specifications:

Aperture size: F2.4
Aperture size: F2.4
Aperture size: F2.4

Fourth camera:

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

Specifications:

Aperture size: F2.4
Aperture size: F2.4

Video recording:

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)

Front:

13 MP
8 MP
5 MP

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

6.44 x 2.96 x 0.35 inches (163.7 x 75.3 x 8.9 mm)
6.46 x 2.98 x 0.35 inches (164 x 75.8 x 8.9 mm)
6.46 x 2.99 x 0.36 inches (164.2 x 75.9 x 9.1 mm)

Weight:

6.77 oz (192.0 g)
7.23 oz (205.0 g)
6.91 oz (196.0 g)

Materials:

Back: Plastic; Frame: Plastic
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
Right: Volume control, Lock/Unlock key

Colors:

Black, White, Blue, Red
Black, White, Blue, Red
Black, White, Blue

Cellular

LTE (FDD):

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

LTE (TDD):

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)

UMTS:

Bands 5(850), 8(900), 2(1900), 1(2100)
Bands 1(2100), 5(850), 8(900)
Bands 1(2100), 5(850), 8(900)

Data Speed:

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes
Yes
Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Loudspeaker

Screen mirroring:

Wireless screen share
Wireless screen share, MirrorLink
Wireless screen share

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
5.0
4.2

Wi-Fi:

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 b, g, n; Wi-Fi Direct, Hotspot
802.11 b, g, n, 802.1x; Wi-Fi Direct, Hotspot

USB:

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

Features:

Charging
Charging, Mass storage device
Charging, Mass storage device

Location:

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

Sensors:

Accelerometer, Gyroscope
Accelerometer
Accelerometer

Other:

NFC
NFC

Regulatory Approval

FCC approval:

Date approved:

Mar 11, 2021
Feb 07, 2021

FCC ID value:

A3LSMA125U
ZCASMA025U

Measured SAR:

Head:

1.14 W/kg
1.00 W/kg

Body:

1.20 W/kg
0.85 W/kg

Simultaneous Transmission:

1.59 W/kg
1.40 W/kg

Wireless Router:

1.34 W/kg
0.85 W/kg

Buyers information

Price:

€ 240
€ 179

User Manual:

This is the official Samsu​ng Galaxy A21s User Guide in English provided from the manufacturer.
This is the official Samsu​ng Galaxy A12 User Guide in English provided from the manufacturer.

In The Box:

Power brick, USB cable, Headphones, Sim card extraction tool
Power brick, USB Cable, Headphones, Sim Card extractor tool

Availability

Officially announced:

May 15, 2020
Nov 24, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless