Samsung Galaxy J8 vs Samsung Galaxy J7 Prime 2 vs Samsung Galaxy A51 5G

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

Comparison mode:

Display

Size:

6.0 inches
5.5 inches
6.5 inches

Resolution:

1480 x 720 pixels, 18.5:9 ratio, 274 PPI
1920 x 1080 pixels, 16:9 ratio, 401 PPI
2400 x 1080 pixels, 20:9 ratio, 405 PPI

Technology:

Super AMOLED
IPS LCD
Super AMOLED

Screen-to-body:

75.79 %
73.39 %
87.37 %

Features:

Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass), Proximity sensor
60Hz refresh rate, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip:

Qualcomm Snapdragon 450 SDM450
Samsung Exynos 7 Octa 7870
Samsung Exynos 980

Processor:

Octa-core, 1800 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2200 MHz, ARM Cortex-A77 and ARM Cortex-A55, 64-bit, 8 nm

GPU:

Adreno 506
Mali-T830 MP1
Mali-G76 MP5

RAM:

4GB LPDDR3
3GB LPDDR3
6GB LPDDR4

Internal storage:

64GB, available to use: 51 GB
32GB, available to use: 23.9 GB
128GB, available to use: 105.3 GB

Storage expansion:

microSDXC up to 256 GB
microSDXC up to 256 GB
microSDXC up to 1000 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (10, 8.0 Oreo), Samsung TouchWiz UI
Android (9.0 Pie, 8.0 Oreo, 7.1 Nougat), Samsung One UI
Android (11, 10), Samsung One UI

Battery

Capacity:

3500 mAh
3300 mAh
4500 mAh

Type:

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

Charging:

Fast charging

Max charge speed:

Wired: 25.0W

Camera

Rear:

Dual camera
Single camera
Quad camera

Main camera:

16 MP (PDAF, CCD image sensor)
13 MP (PDAF)
48 MP (PDAF)

Specifications:

Aperture size: F1.7; Focal length: 26 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Aperture size: F1.9; Focal length: 27 mm; Sensor size: 1/3.06"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm

Second camera:

5 MP (Depth information)
12 MP (Ultra-wide)

Specifications:

Aperture size: F1.9; Focal Length: 24 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 13 mm; Pixel size: 1.12 μm

Third camera:

5 MP (Macro)

Specifications:

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

Fourth camera:

5 MP (Depth information)

Specifications:

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

Video recording:

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (480 fps)

Features:

Video calling, Video sharing
Video calling, Video sharing
Hyperlapse, EIS

Front:

16 MP (Flash, HDR)
13 MP
32 MP (HDR)

Video capture:

1920x1080 (Full HD)
1920x1080 (Full HD)

Design

Dimensions:

6.27 x 2.98 x 0.32 inches (159.2 x 75.7 x 8.2 mm)
5.97 x 2.95 x 0.31 inches (151.7 x 75 x 8 mm)
6.26 x 2.90 x 0.34 inches (158.9 x 73.6 x 8.7 mm)

Weight:

6.24 oz (177.0 g)
6.00 oz (170.0 g)
6.60 oz (187.0 g)

Materials:

Back: Plastic
Back: Metal
Back: Plastic; Frame: Aluminum

Biometrics:

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

Features:

Notification light, Touch sensitive control keys

Keys:

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

Colors:

Black, Gold, Pink, Blue
Black, Gold, Rose gold
Prism cube black

Cellular

5G:

n41, n71, SA, NSA

LTE (FDD):

Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
Bands 1(2100), 4(AWS-1), 5(850), 7(2600), 8(900), 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), 40(2300), 41(2600+)
Bands 38(2600), 40(2300)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)

UMTS:

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

Data Speed:

LTE-A Cat 6 (300/50 Mbit/s), HSPA, HSUPA
LTE, HSPA, HSUPA
LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes
Yes

SIM type:

Nano SIM
Nano SIM

HD Voice:

Yes

VoLTE:

Yes

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features:

Dolby Atmos, Album art cover, Background playback
Album art cover, Background playback
Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM
FM

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

4.2
4.1
5.0

Wi-Fi:

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

USB:

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

Features:

Charging, Mass storage device
Charging, Mass storage device
Charging, OTG

Location:

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

Sensors:

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

Other:

ANT+, VoIP, Tethering, Computer sync, OTA sync
ANT+, VoIP, Tethering, Computer sync, OTA sync
NFC, ANT+

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Jul 15, 2020

FCC ID value:

A3LSMA516U

Measured SAR:

Head:

1.18 W/kg

Body:

1.20 W/kg

Simultaneous Transmission:

3.25 W/kg

Wireless Router:

1.37 W/kg

Buyers information

Price:

$ 500

User Manual:

This is the official Samsu​ng Galaxy A51 5G User Guide in English provided from the manufacturer.

In The Box:

Charger, microUSB cable, Documentation, Quick Start Guide, Headphones and SIM removal tool.
Charger, microUSB cable, Headset and Documentation
A to C USB Cable, Wall Adapter, SIM Pin/Ejector, Quick Start Guide, Terms & Conditions

Availability

Officially announced:

Jun 27, 2018
Apr 08, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless