Samsung Galaxy A51 vs Samsung Galaxy A42

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

Comparison mode:

Specs Size

Display

Size:

6.5 inches

6.6 inches

Resolution:

2400 x 1080 pixels, 20:9 ratio, 405 PPI

1600 x 720 pixels, 20:9 ratio, 266 PPI

Technology:

Super AMOLED

Refresh rate:

60Hz

Screen-to-body:

87.37 %

84.26 %

Features:

Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Ambient light sensor, Proximity sensor

Hardware

System chip:

Samsung Exynos 9611 (10 nm)

Qualcomm Snapdragon 750G SM7225 (8 nm)

Processor:

Octa-core, 2300 MHz, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit

Octa-core, 2x 2.2GHz Kryo 570 + 6x 1.8GHz Kryo 570, 64-bit

GPU:

Mali-G72 MP3

Adreno 619

RAM:

4GB LPDDR4

Internal storage:

128GB, available to use: 105.9 GB

128GB, available to use: 106 GB

Storage expansion:

microSDXC up to 512 GB

microSDXC up to 1000 GB

Device type:

Smartphone

OS:

Android (11, 10), Samsung One UI

Android (12, 11, 10), Samsung One UI

Battery

Capacity:

4000 mAh

5000 mAh

Type:

Li - Polymer, Not user replaceable

Not user replaceable

Battery life test results:

link

Charging:

Fast charging

Samsung Adaptive Fast Charging

Max charge speed:

Wired: 15.0W

Camera

Rear:

Quad camera

Main camera:

48 MP (PDAF)

Specifications:

F2.0; 26 mm; 1/2"; 0.8 μm

F1.8; 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

Aperture size: F2.2

Third camera:

5 MP (Macro)

Specifications:

Aperture size: F2.4; Focal Length: 40 mm

Aperture size: F2.4

Fourth camera:

5 MP (Depth information)

Specifications:

Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm

Aperture size: F2.4

Video recording:

3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

3840x2160 (4K UHD) (30 fps), 1280x720 (HD) (480 fps)

Features:

Hyperlapse, EIS

Front:

32 MP (HDR)

20 MP (Autofocus)

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

6.24 x 2.90 x 0.31 inches (158.5 x 73.6 x 7.9 mm)

6.47 x 2.99 x 0.34 inches (164.4 x 75.9 x 8.6 mm)

Weight:

6.07 oz (172.0 g)

6.81 oz (193.0 g)

Materials:

Back: Plastic; Frame: Plastic

Biometrics:

2D Face unlock, In-screen fingerprint

In-screen fingerprint

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Prism Crush black, Prism Crush white, Prism Crush pink, Prism Crush blue

Prism Dot black, Prism Dot white, Prism Dot grey

Cellular

5G:

n1, n3, n5, n7, n8, n28, Sub-6

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)

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)

LTE (TDD):

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

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

UMTS:

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

Dual SIM:

Shared with microSD

SIM type:

Nano SIM

Multimedia

Headphones:

3.5mm jack

Speakers:

Earpiece, Loudspeaker

Features:

Dolby Atmos

Screen mirroring:

Wireless screen share

Radio:

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0

Wi-Fi:

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

USB:

Type-C (reversible), USB 2.0

Features:

Charging, OTG

Charging

Location:

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

Sensors:

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

Accelerometer, Gyroscope, Compass

Other:

NFC, ANT+

NFC

Regulatory Approval

FCC approval:

Date approved:

Nov 28, 2019

Apr 08, 2021

FCC ID value:

A3LSMA515FN

A3LSMA426U

Measured SAR:

Head:

0.89 W/kg

1.11 W/kg

Body:

1.18 W/kg

1.25 W/kg

Simultaneous Transmission:

1.56 W/kg

1.59 W/kg

Wireless Router:

1.12 W/kg

1.06 W/kg

Phablet:

2.76 W/kg

3.81 W/kg

Buyers information

Price:

$ 400

€ 340

User Manual:

This is the official Samsung Galaxy A51 User Guide in English provided from the manufacturer.

This is the official Samsung Galaxy A42 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Dec 12, 2019

Sep 02, 2020

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