Samsung Galaxy A42 vs Samsung Galaxy A21s Specs Comparison

Design

Dimensions
6.47 x 2.99 x 0.34 inches 164.4 x 75.9 x 8.6 mm	6.44 x 2.96 x 0.35 inches 163.7 x 75.3 x 8.9 mm
Weight
6.81 oz (193.0 g)	6.77 oz (192.0 g)
Biometrics
Optical in-screen fingerprint	2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Prism Dot black, Prism Dot white, Prism Dot grey	Black, White, Blue, Red

Display

Size
6.6-inch	6.5-inch
Resolution
1600x720px, 20:9 ratio, 266 PPI	1600x720px, 20:9 ratio, 270 PPI
Technology
Super AMOLED	TFT
Refresh rate
60Hz
Screen-to-body
84.26 %	82.94 %
Features
Ambient light sensor, Proximity sensor	Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 750G SM7225 (8 nm)	Samsung Exynos 850
Processor
Octa-core 2x 2.2GHz Kryo 570 + 6x 1.8GHz Kryo 570	Octa-core 8x 2.0GHz Cortex-A55
GPU
Adreno 619	Mali-G76
RAM
4GB (LPDDR4)	3GB (LPDDR4)
Internal storage
128GB, available to use: 106 GB	32GB (eMMC 5.1), available to use: 19.5 GB
Storage expansion
microSDXC up to 1000 GB	microSDXC up to 512 GB
OS
Android (12, 11, 10), Samsung One UI	Android (10), Samsung One UI

Battery

Capacity
5000 mAh	5000 mAh
Type
	Li - Polymer
Charging
Samsung Adaptive Fast Charging	Fast charging
Charge speed
Wired: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

Untested

Browsing

Untested

Video

11h 9min

Gaming

7h 48min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera	Quad camera
Main camera
48 MP (PDAF) Aperture size: F1.8 Pixel size: 0.8 μm	48 MP (PDAF) Aperture size: F2.0 Focal length: 26 mm Sensor size: 1/2" Pixel size: 0.8 μm
Second camera
8 MP (Ultra-wide) Aperture size: F2.2	8 MP (Ultra-wide) Aperture size: F2.2 Sensor size: 1/4" Pixel size: 1.12 μm
Third camera
5 MP (Macro) Aperture size: F2.4	2 MP (Macro) Aperture size: F2.4
Fourth camera
5 MP (Depth information) Aperture size: F2.4	2 MP (Depth information) Aperture size: F2.4
Flash
LED	LED
Video recording
3840x2160 (4K UHD) (30 fps), 1280x720 (HD) (480 fps)	1920x1080 (Full HD) (30 fps)
Front
20 MP (Autofocus)	13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
5.0	5.0
WLAN
802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,dual-band Wi-Fi Direct, Hotspot
USB
Type-C, USB 2.0	Type-C, USB 2.0
Location
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	Accelerometer, Gyroscope
Other
NFC	NFC

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Screen mirroring
Wireless screen share	Wireless screen share

Cellular

5G
Bands n1, n3, n5, n7, n8, n28, Sub-6
4G (FDD)
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), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD)
Bands 38(2600), 40(2300), 41(2600+)	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)	Bands 1(2100), 2(1900), 5(850), 8(900)
Data Speed
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
Dual SIM
Yes	Yes
SIM type
Nano SIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Apr 08, 2021 FCC ID value: A3LSMA426U
Measured SAR
Head: 1.11 W/kg Body: 1.25 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.06 W/kg Phablet: 3.81 W/kg

Buyers information

MSRP
€ 340	€ 240

Availability

Officially announced
Sep 02, 2020	May 15, 2020

Alternative variants

with 4GB RAM

RAM	4GB
Internal storage	64GB

with 6GB RAM

RAM	6GB
Internal storage	64GB

Links

Full specifications
Samsung Galaxy A42 Specs	Samsung Galaxy A21s Specs
PhoneArena Review
	Samsung Galaxy A21s Review