Samsung Galaxy S6 vs Samsung Galaxy A21

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Buy from $240
Buy from $165

Display

Size

5.1 inches
6.5 inches

Resolution

2560 x 1440 pixels,
577 PPI
1600 x 720 pixels, 20:9 ratio,
270 PPI

Technology

Super AMOLED
IPS LCD

Screen-to-body

70.48 %
79.20 %

Features

Scratch-resistant glass (Corning Gorilla Glass 4), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor

Hardware

System chip

Samsung Exynos 7 Octa 7420
Mediatek Helio P35

Processor

Octa-core, 2100 MHz, ARM Cortex-A57 and ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2300 MHz, Arm Cortex-A53, 64-bit, 12 nm

GPU

Mali-T760 MP8
PowerVR GE8320

RAM

3GB LPDDR4
3GB LPDDR4

Internal storage

128GB, not expandable
32GB (eMMC 5.1), available to use: 19.8 GB

Storage expansion

 
microSDXC up to 512 GB

Device type

Smartphone
Smartphone

OS

Android (7.0 Nougat, 6.0 Marshmallow, 5.1 Lollipop, 5.0 Lollipop), Samsung TouchWiz UI
Android (10), Samsung One UI

Battery

Capacity

2550 mAh
4000 mAh

Type

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

Charging

Fast charging, Qi and Powermat wireless charging
Fast charging

Max charge speed

 
Wired: 15.0W

Camera

Rear

Single camera
Quad camera

Main camera

16 MP (OIS, Autofocus, BSI sensor)
16 MP (PDAF)

Specifications

Aperture size: F1.9; Focal length: 28 mm; Sensor size: 1/2.6"; Pixel size: 1.12 μm
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm

Second camera

 
8 MP (Ultra-wide)

Specifications

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

Third camera

 
2 MP (Macro)

Specifications

 
Aperture size: F2.4

Fourth camera

 
2 MP (Depth information)

Specifications

 
Aperture size: F2.4

Video recording

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (120 fps)
1920x1080 (Full HD) (30 fps)

Features

OIS, HDR, Continuous autofocus, Picture-taking during video recording, Video light, Video calling
 

Front

5 MP (HDR)
13 MP

Design

Dimensions

5.65 x 2.78 x 0.27 inches (143.4 x 70.5 x 6.8 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)

Weight

4.87 oz (138.0 g)
the average is 6.3 oz (179 g)
6.81 oz (193.0 g)
the average is 6.3 oz (179 g)

Materials

Back: Glass; Frame: Aluminum
Back: Plastic; Frame: Plastic

Biometrics

Fingerprint (touch)
Fingerprint (touch)

Features

Notification light, Touch sensitive control keys
 

Keys

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

Colors

Black, Gold, Blue, White
Black

Cellular

LTE (FDD)

Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 17(700 b), 20(800 DD)
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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)

LTE (TDD)

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

UMTS

850, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

LTE-A Cat 6 (300/50 Mbit/s), HSPA, HSUPA, UMTS
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

SIM type

Nano SIM
Nano SIM

HD Voice

 
Yes

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features

Album art cover, Background playback, Custom equalizer, Preset equalizer, Sound effects
 

Screen mirroring

DLNA, Wireless screen share
Wireless screen share

Radio

 
FM

Additional microphone(s)

for Noise cancellation, Video recording
 

Connectivity & Features

Bluetooth

4.1
5.0

Wi-Fi

802.11 a, b, g, n, ac, dual-band; Multiple antennas, MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB

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

Features

Mass storage device, Charging
Charging

Location

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

Sensors

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

Other

NFC, ANT+, UMA (Wi-Fi Calling), Infrared, Tethering, Computer sync, OTA sync
NFC

Hearing aid compatible

M3, T3
M4, T3

Regulatory Approval

FCC approval

 
 

Date approved

Mar 02, 2015
Apr 17, 2020

FCC ID value: A3LSMG920A link
FCC ID value: ZCASMA215U link

Measured SAR

 
 

Head

0.49 W/kg
0.42 W/kg

Body

0.96 W/kg
1.27 W/kg

Simultaneous Transmission

1.25 W/kg
1.27 W/kg

Wireless Router

1.04 W/kg
1.27 W/kg

Buyers information

Price

 
$ 250

In The Box

 
This is the official Samsu​ng Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced

Mar 01, 2015
Apr 08, 2020
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.
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