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Samsung Galaxy A21s vs Samsung Galaxy S9 vs Samsung Galaxy S20

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

Comparison mode:

Display

Size:

6.5 inches
5.8 inches
6.2 inches

Resolution:

1600 x 720 pixels, 20:9 ratio, 270 PPI
2960 x 1440 pixels, 18.5:9 ratio, 568 PPI
3200 x 1440 pixels, 20:9 ratio, 566 PPI

Technology:

TFT
Super AMOLED
Dynamic AMOLED

Refresh rate:

120Hz (@1080p)

Screen-to-body:

82.94 %
84.36 %
88.59 %

Features:

Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor

Hardware

System chip:

Samsung Exynos 850
Qualcomm Snapdragon 845 SDM845
Qualcomm Snapdragon 865 SM8250

Processor:

Octa-core, 2000 MHz, Arm Cortex-A55, 64-bit
Octa-core, 2800 MHz, Kryo 385, 64-bit, 10 nm
Octa-core, 2840 MHz, Kryo 585, 64-bit, 7 nm

GPU:

Mali-G76
Adreno 630
Adreno 650

RAM:

3GB LPDDR4
4GB LPDDR4
12GB LPDDR5

Internal storage:

32GB (eMMC 5.1), available to use: 19.5 GB
64GB
128GB (UFS 3.0)

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 400 GB
microSDXC up to 1000 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10), Samsung One UI
Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI
Android (11, 10), Samsung One UI

Battery

Capacity:

5000 mAh
3000 mAh
4000 mAh

Type:

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

Battery life test results:

Charging:

Fast charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging

Max charge speed:

Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Quad camera
Single camera
Triple camera

Main camera:

48 MP (PDAF)
12 MP (OIS, PDAF)
12 MP (OIS, PDAF)

Specifications:

Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.5/F2.4; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 1.8 μm

Second camera:

8 MP (Ultra-wide)
64 MP (Telephoto, OIS, PDAF)

Specifications:

Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm
Aperture size: F2.0; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Third camera:

2 MP (Macro)
12 MP (Ultra-wide, Autofocus)

Specifications:

Aperture size: F2.4
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.4 μm

Fourth camera:

2 MP (Depth information)

Specifications:

Aperture size: F2.4

Video recording:

1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video calling, Video sharing
OIS, HDR, EIS

Front:

13 MP
8 MP (Autofocus, HDR)
10 MP (PDAF, HDR)

Video capture:

1920x1080 (Full HD)
2560x1440 (QHD) (30 fps)
3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

6.44 x 2.96 x 0.35 inches (163.7 x 75.3 x 8.9 mm)
5.81 x 2.70 x 0.33 inches (147.7 x 68.7 x 8.5 mm)
5.97 x 2.72 x 0.31 inches (151.7 x 69.1 x 7.9 mm)

Weight:

6.77 oz (192.0 g)
5.75 oz (163.0 g)
5.78 oz (163.0 g)

Materials:

Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Glass (Corning Gorilla Glass 6); Frame: Aluminum

Resistance:

Water, Dust; IP68
Water, Dust; IP68

Biometrics:

2D Face unlock, Fingerprint (touch)
Iris scanner, 2D Face unlock, Fingerprint (touch)
2D Face unlock, Ultrasonic in-screen fingerprint

Features:

Notification light

Keys:

Right: Volume control, Lock/Unlock key
Left: Volume control, Other; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key

Colors:

Black, White, Blue, Red
Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue
Cloud blue, Cosmic grey, Cloud pink, Cosmic white

Cellular

5G:

n1, n3, n5, n7, n8, n28, n40, n77, n78, SA, NSA, Sub-6

LTE (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), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 66(AWS-3)

LTE (TDD):

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)

UMTS:

Bands 5(850), 8(900), 2(1900), 1(2100)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
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 Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA
LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes

SIM type:

Nano SIM
Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack
No 3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Multiple speakers

Features:

32-Bit DAC, aptX-HD
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
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; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.1
Type-C (reversible), USB 3.1

Features:

Charging
Charging, OTG, Video out
Charging, Headphones port, OTG

Location:

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

Sensors:

Accelerometer, Gyroscope
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer

Other:

NFC
NFC, ANT+
NFC, ANT+

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Jan 11, 2018
Jan 24, 2020

FCC ID value:

A3LSMG960U
A3LSMG981U

Measured SAR:

Head:

0.35 W/kg
1.07 W/kg

Body:

0.96 W/kg
1.03 W/kg

Simultaneous Transmission:

1.59 W/kg
1.59 W/kg

Wireless Router:

0.95 W/kg
1.25 W/kg

Phablet:

3.99 W/kg

Buyers information

Price:

€ 240
$ 720
$ 1000

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 S20 User Guide in English provided from the manufacturer.

Availability

Officially announced:

May 15, 2020
Feb 25, 2018
Feb 11, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless