Samsung Galaxy A51 vs Samsung Galaxy A42
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Display
Size
Resolution
Technology
Super AMOLED
Super AMOLED
Screen-to-body
87.37 %
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip
Samsung Exynos 9611
Qualcomm Snapdragon 690 SM6350
Processor
GPU
Mali-G72 MP3
Adreno 619L
RAM
Internal storage
128GB, available to use: 105.9 GB
64GB
Storage expansion
microSDXC up to 512 GB
microSDXC
Device type
Smartphone
Smartphone
OS
Android (10), Samsung One UI
Android (10), Samsung One UI
Battery
Capacity
4000 mAh
5000 mAh
Type
Li - Polymer, Not user replaceable
Not user replaceable
Charging
Fast charging
Fast charging
Camera
Rear
Quad camera
Quad camera
Main camera
Specifications
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Pixel size: 0.8 μm
Second camera
12 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm
Third camera
5 MP (Macro)
5 MP (Macro)
Specifications
Aperture size: F2.4; Focal Length: 40 mm
Fourth camera
5 MP (Depth information)
5 MP (Depth information)
Specifications
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Video recording
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD)
Features
Hyperlapse, EIS
Front
32 MP (HDR)
20 MP (Autofocus)
Design
Dimensions
Weight
the average is 6.3 oz (179 g)
Materials
Back: Plastic; Frame: Plastic
Biometrics
2D Face unlock, In-screen fingerprint
Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors
Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue
Black, White, Grey
Cellular
5G
SA, NSA
LTE (FDD)
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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
LTE (TDD)
Bands 38(2600), 39(1900+), 41(2600+)
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
Data Speed
SIM type
Nano SIM
Nano SIM
Multimedia
Headphones
3.5mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features
Dolby Atmos
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
Additional microphone(s)
for Noise cancellation
Connectivity & Features
Bluetooth
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; Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features
Charging, OTG
Charging
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Gyroscope, Compass
Other
NFC, ANT+
NFC
Regulatory Approval
Measured SAR
Head
0.89 W/kg
Body
1.18 W/kg
Simultaneous Transmission
1.56 W/kg
Wireless Router
1.12 W/kg
Phablet
2.76 W/kg
Availability
Officially announced
Dec 12, 2019
Sep 02, 2020
Scheduled release
November 2020
