Samsung Galaxy J7 Star vs Samsung Galaxy A8 Star Specs Comparison

Design

Dimensions
6.03 x 3 x 0.34 inches 153.2 x 76.2 x 8.6 mm	6.39 x 3.03 x 0.30 inches 162.4 x 77 x 7.6 mm
Weight
6.38 oz (181.0 g)	6.74 oz (191.0 g)
Materials
	Back: Glass Frame: Metal
Biometrics
2D Face unlock	2D Face unlock, Fingerprint (touch)
Features
Touch sensitive control keys	Notification light
Keys
Left: Volume control; Right: Lock/Unlock key	Left: Volume control, Other; Right: Lock/Unlock key
Colors
Blue	Black, White

Display

Size
5.5-inch	6.3-inch
Resolution
1280x720px, 16:9 ratio, 267 PPI	2220x1080px, 18.5:9 ratio, 392 PPI
Technology
TFT	Super AMOLED
Screen-to-body
71.45 %	80.77 %
Features
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor	Ambient light sensor, Proximity sensor

Hardware

System chip
Samsung Exynos 7 Octa 7870 (14 nm)	Qualcomm Snapdragon 660 SDM660 (14 nm)
Processor
Octa-core 1600 MHz ARM Cortex-A53	Octa-core 2200 MHz Kryo 260
GPU
Mali-T830 MP1	Adreno 512
RAM
2GB (LPDDR3)	6GB (LPDDR4)
Internal storage
32GB	64GB, available to use: 49.6 GB
Storage expansion
microSDXC up to 400 GB	microSDXC up to 400 GB
OS
Android (9.0 Pie, 8.0 Oreo), Samsung One UI	Android (9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity
3300 mAh	3700 mAh
Type
Li - Polymer	Li - Ion
Charging
	Fast charging

Camera

Rear
Single camera	Dual camera
Main camera
13 MP (PDAF) Aperture size: F1.7 Focal length: 28 mm Sensor size: 1/3.06" Pixel size: 1.12 μm	16 MP (PDAF) Aperture size: F1.7 Focal length: 26 mm Sensor size: 1/2.8" Pixel size: 1.12 μm
Second camera
	24 MP (PDAF, CMOS image sensor) Aperture size: F1.7 Focal Length: 26 mm Sensor size: 1/2.8" Pixel size: 0.9 μm
Flash
LED	LED
Video recording
1920x1080 (Full HD) (30 fps)	3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps) Hyperlapse, EIS, Video calling, Video sharing
Front
13 MP	24 MP (Wide Angle), Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
4.2	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
microUSB, USB 2.0	Type-C, USB 2.0
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou
Sensors
Accelerometer, Gyroscope, Compass	Accelerometer, Gyroscope
Other
NFC, ANT+, UMA (Wi-Fi Calling)	NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync

Multimedia

Headphones
3.5mm jack	3.5mm jack
Speakers
Earpiece, Loudspeaker	Earpiece, Loudspeaker
Features
	Dolby Atmos, Album art cover, Background playback
Screen mirroring
Wireless screen share	Wireless screen share,MirrorLink
Radio
	FM
Additional microphone(s)
	Noise cancellation

Cellular

4G (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), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)
4G (TDD)
	Bands 38(2600), 40(2300), 41(2600+)
3G
Bands 5(850), 4(1700/2100), 2(1900), 1(2100)	Bands 5(850), 8(900), 2(1900), 1(2100)
Data Speed
LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s	LTE-A Cat 9 (450/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM
	Yes
SIM type
Nano SIM	Nano SIM
HD Voice
Yes

Regulatory Approval

FCC approval
Date approved: May 10, 2018 FCC ID value: A3LSMJ737T
Measured SAR
Head: 1.36 W/kg Body: 1.01 W/kg Simultaneous Transmission: 1.58 W/kg Wireless Router: 1.11 W/kg Phablet: 3.60 W/kg	Head: 0.43 W/kg Body: 1.73 W/kg

Buyers information

In The Box
USB cable, Wall charging adapter, Start guide, Terms & Conditions	Charger, USB Type-C cable, Headphones, SIM Removal Tool, Documentation

Links

Full specifications
Samsung Galaxy J7 Star Specs	Samsung Galaxy A8 Star Specs