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Samsung Galaxy A20 vs Samsung Galaxy A42 vs Samsung Galaxy S21

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

Comparison mode:

Display

Size:

6.4 inches
6.6 inches
6.2 inches

Resolution:

1560 x 720 pixels, 19.5:9 ratio, 268 PPI
1600 x 720 pixels, 20:9 ratio, 266 PPI
2400 x 1080 pixels, 20:9 ratio, 424 PPI

Technology:

Super AMOLED
Super AMOLED
Dynamic AMOLED

Refresh rate:

60Hz
60Hz
120Hz (adaptive)

Screen-to-body:

84.95 %
84.26 %
86.06 %

Peak brightness:

1300 cd/m2 (nit)

Features:

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

Hardware

System chip:

Samsung Exynos 7884
Qualcomm Snapdragon 750G SM7225
Qualcomm Snapdragon 888

Processor:

Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2200 MHz, Kryo 570, 64-bit, 8 nm
Octa-core, 2840 MHz, Kryo 680, 64-bit, 5 nm

GPU:

Mali-G71 MP2
Adreno 619
Adreno 660

RAM:

3GB LPDDR4
4GB LPDDR4
8GB LPDDR5

Internal storage:

32GB, available to use: 20.3 GB
128GB, available to use: 106 GB
128GB (UFS 3.0), not expandable

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 1000 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

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

Battery

Capacity:

4000 mAh
5000 mAh
4000 mAh

Type:

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

Charging:

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

Max charge speed:

Wired: 15.0W
Wired: 25.0W; Wireless: 15.0W

Camera

Rear:

Dual camera
Quad camera
Triple camera

Main camera:

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

Specifications:

Aperture size: F1.9; Focal length: 27 mm; Sensor size: 1/3.1"; Pixel size: 1.12 μm
Aperture size: F1.8; Pixel size: 0.8 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.76"; Pixel size: 1.8 μm

Second camera:

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

Specifications:

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2
Aperture size: F2.0; Focal Length: 29 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Third camera:

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

Specifications:

Aperture size: F2.4
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Fourth camera:

5 MP (Depth information)

Specifications:

Aperture size: F2.4

Video recording:

1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1280x720 (HD) (480 fps)
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)

Features:

OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS

Front:

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

Video capture:

3840x2160 (4K UHD) (60 fps)

Design

Dimensions:

6.24 x 2.94 x 0.31 inches (158.4 x 74.7 x 7.8 mm)
6.47 x 2.99 x 0.34 inches (164.4 x 75.9 x 8.6 mm)
5.97 x 2.80 x 0.31 inches (151.7 x 71.2 x 7.9 mm)

Weight:

5.96 oz (169.0 g)
6.81 oz (193.0 g)
6.03 oz (171.0 g)

Materials:

Back: Plastic
Back: Plastic; Frame: Aluminum

Resistance:

Water, Dust; IP68

Biometrics:

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

Keys:

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

Colors:

Black,Deep blue, Red
Prism Dot black, Prism Dot white, Prism Dot grey
Phantom pink, Violet, Gray, White

Cellular

5G:

n1, n3, n5, n7, n8, n28, Sub-6
n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave

LTE (FDD):

Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 13(700 c), 20(800 DD), 28(700 APT), 66(AWS-3)
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), 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), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600)

LTE (TDD):

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600)

UMTS:

Bands 1(2100), 2(1900), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)

Data Speed:

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

Shared with microSD

SIM type:

Nano SIM
Nano SIM
Nano SIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack
No 3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Multiple speakers

Features:

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

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM, Stereo, RDS

Additional microphone(s):

for Noise cancellation
for Noise cancellation, Video recording

Connectivity & Features

Bluetooth:

5.0
5.0
5.0

Wi-Fi:

802.11 a, b, g, n, ac; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; 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 2.0
Type-C (reversible), USB 3.2

Features:

Charging
Charging
Charging, Headphones port, OTG, Video out

Location:

GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
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, Compass, Hall (for flip covers)
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer

Other:

NFC
NFC, ANT+

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Jun 19, 2019
Apr 08, 2021
Dec 08, 2020

FCC ID value:

A3LSMA205U
A3LSMA426U
A3LSMG991U

Measured SAR:

Head:

1.09 W/kg
1.11 W/kg
0.36 W/kg

Body:

0.60 W/kg
1.25 W/kg
1.08 W/kg

Simultaneous Transmission:

1.37 W/kg
1.59 W/kg
3.96 W/kg

Wireless Router:

1.00 W/kg
1.06 W/kg
1.09 W/kg

Phablet:

3.94 W/kg
3.81 W/kg
2.49 W/kg

Buyers information

Price:

$ 250
€ 340
$ 800

User Manual:

This is the official Samsu​ng Galaxy A42 User Guide in English provided from the manufacturer.

In The Box:

C to C Data Cable, Ejection Pin

Availability

Officially announced:

Sep 02, 2020
Jan 14, 2021
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