Samsung Galaxy J7 Star vs Samsung Galaxy A51 5G
Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone specs comparison tool or pick a popular device from the ones below.
Display
Size
Resolution
Technology
TFT
Super AMOLED
Screen-to-body
71.45 %
87.37 %
Features
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Hardware
System chip
Samsung Exynos 7 Octa 7870
Samsung Exynos 980
Processor
GPU
Mali-T830 MP1
Mali-G76 MP5
RAM
Internal storage
32GB
128GB, available to use: 105.3 GB
Storage expansion
microSDXC up to 400 GB
microSDXC up to 1000 GB
Device type
Smartphone
Smartphone
OS
Android (9.0 Pie, 8.0 Oreo), Samsung One UI
Android (10), Samsung One UI
Battery
Capacity
3300 mAh
4500 mAh
Type
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging
Fast charging
Max charge speed
Wired: 25.0W
Camera
Rear
Single camera
Quad camera
Main camera
Specifications
Aperture size: F1.7; Focal length: 28 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
12 MP (Ultra-wide)
Specifications
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)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (480 fps)
Features
Hyperlapse, EIS
Front
13 MP
32 MP (HDR)
Design
Dimensions
Weight
the average is 6.3 oz (179 g)
the average is 6.3 oz (179 g)
Materials
Back: Plastic; Frame: Plastic
Biometrics
2D Face unlock
2D Face unlock, In-screen fingerprint
Features
Touch sensitive control keys
Keys
Left: Volume control; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors
Blue
Prism cube black
Cellular
5G
n41, n71, SA, NSA
LTE (FDD)
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 66(AWS-3), 71(600)
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), 39(1900+), 40(2300), 41(2600+)
UMTS
850, 1700/2100, 1900, 2100 MHz
850, 1700/2100, 1900, 2100 MHz
Data Speed
SIM type
Nano SIM
HD Voice
Yes
Yes
Multimedia
Headphones
3.5mm jack
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
4.2
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
microUSB, USB 2.0
Type-C (reversible), USB 2.0
Features
Charging
Charging, OTG
Location
GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other
NFC, ANT+, UMA (Wi-Fi Calling)
NFC, ANT+
Hearing aid compatible
M3, T3
M3, T3
Regulatory Approval
FCC approval
Date approved
May 10, 2018
Jul 15, 2020
Measured SAR
Head
1.36 W/kg
1.18 W/kg
Body
1.01 W/kg
1.20 W/kg
Simultaneous Transmission
1.58 W/kg
3.25 W/kg
Wireless Router
1.11 W/kg
1.37 W/kg
Phablet
3.60 W/kg
Buyers information
Price
$ 500
In The Box
USB cable, Wall charging adapter, Start guide, Terms & Conditions
A to C USB Cable, Wall Adapter, SIM Pin/Ejector, Quick Start Guide, Terms & Conditions
Availability
Officially announced
Apr 08, 2020
