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Samsung Galaxy S8 vs Samsung Galaxy J7 Star Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Comparison mode:
Specs Size
Differences only
9.0
Samsung Galaxy S8
Samsung Galaxy J7 Star
Samsung Galaxy S8 Samsung Galaxy J7 Star
Released · Apr 21, 2017
Released · Jul 13, 2018
5.8-inch
5.5-inch
Single camera
Single camera
4GB · 64GB
2GB · 32GB
3000 mAh
3300 mAh

Design

Dimensions
5.86 x 2.68 x 0.31 inches
148.9 x 68.1 x 8.0 mm 		6.03 x 3 x 0.34 inches
153.2 x 76.2 x 8.6 mm
Weight
5.47 oz (155.0 g) 6.38 oz (181.0 g)
Materials
Back: Glass (Corning Gorilla Glass 5)
Frame: Aluminum
Resistance
Water, Dust; IP68
Biometrics
Iris scanner, 2D Face unlock, Fingerprint (touch) 2D Face unlock
Features
Touch sensitive control keys
Keys
Left: Volume control, Other; Right: Lock/Unlock key Left: Volume control; Right: Lock/Unlock key
Colors
Midnight black, Orchid gray, Arctic silver, Coral blue, Maple gold, Rose pink, Burgundy red Blue

Display

Size
5.8-inch 5.5-inch
Resolution
2960x1440px, 18.5:9 ratio, 570 PPI 1280x720px, 16:9 ratio, 267 PPI
Technology
Super AMOLED TFT
Screen-to-body
84.26 % 71.45 %
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 835 MSM8998 (10 nm) Samsung Exynos 7 Octa 7870 (14 nm)
Processor
Octa-core
2350 MHz
Kryo 280 		Octa-core
1600 MHz
ARM Cortex-A53
GPU
Adreno 540 Mali-T830 MP1
RAM
4GB (LPDDR4) 2GB (LPDDR3)
Internal storage
64GB 32GB
Storage expansion
microSDXC up to 256 GB microSDXC up to 400 GB
OS
Android (9.0 Pie, 8.0 Oreo, 7.0 Nougat), Samsung One UI Android (9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity
3000 mAh 3300 mAh
Type
Li - Ion Li - Polymer
Charging
Qualcomm Quick Charge 2.0, Qi and Powermat wireless charging

Camera

Rear
Single camera Single camera
Main camera
12 MP (OIS, PDAF)
Aperture size: F1.7
Focal length: 26 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm 		13 MP (PDAF)
Aperture size: F1.7
Focal length: 28 mm
Sensor size: 1/3.06"
Pixel size: 1.12 μm
Flash
LED LED
Video recording
3840x2160 (4K UHD) (30 fps), 2560x1440 (QHD), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (240 fps)
HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, Video light, EIS, Video calling, Video sharing 		1920x1080 (Full HD) (30 fps)
Front
8 MP (Wide Angle, Autofocus, HDR), Video capture: 2560x1440 (QHD) 13 MP

Connectivity & Features

Bluetooth
5.0, Yes 4.2
WLAN
802.11 a,b,g,n,ac,dual-band
MIMO, Wi-Fi Direct, Hotspot 		802.11 a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.1 microUSB, USB 2.0
Hearing aid compatible
M3/T3 M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer Accelerometer, Gyroscope, Compass
Other
NFC, ANT+, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync NFC, ANT+, UMA (Wi-Fi Calling)

Multimedia

Headphones
3.5mm jack 3.5mm jack
Speakers
Earpiece, Loudspeaker Earpiece, Loudspeaker
Features
32-Bit DAC, aptX-HD
Screen mirroring
DLNA,Wireless screen share,MHL Wireless screen share
Additional microphone(s)
Noise cancellation, Video recording

Cellular

4G (FDD)
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), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3) Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 66(AWS-3), 71(600)
4G (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
3G
Bands 1(2100), 2(1900), 5(850), 8(900) Bands 5(850), 4(1700/2100), 2(1900), 1(2100)
Data Speed
LTE-A Pro Cat 16 (1000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
SIM type
Nano SIM Nano SIM
HD Voice
Yes Yes

Regulatory Approval

FCC approval
Date approved: Apr 06, 2017
FCC ID value: A3LSMG950U 		Date approved: May 10, 2018
FCC ID value: A3LSMJ737T
Measured SAR
Head: 0.49 W/kg
Body: 0.48 W/kg
Simultaneous Transmission: 1.53 W/kg
Wireless Router: 0.46 W/kg 		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

Buyers information

In The Box
USB cable, Wall charging adapter, Start guide, Terms & Conditions

Availability

Officially announced
Mar 29, 2017

Alternative variants

International version
System chip Samsung Exynos 9 Octa 8895 (10 nm)
Processor Octa-core
2300 MHz
Exynos M2 "Mongoose" and ARM Cortex-A53
GPU Mali-G71 MP20
4G (FDD) 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), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 66(AWS-3)
4G (TDD) Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
FCC approval Date approved: Sep 05, 2017
FCC ID value: A3LSMG950F
Measured SAR Head: 0.38 W/kg
Body: 0.75 W/kg
Simultaneous Transmission: 1.55 W/kg
Wireless Router: 1.09 W/kg
for T-Mobile
4G (FDD) Bands 2(1900), 4(AWS-1), 5(850), 12(700 a)
3G Bands 5(850), 4(1700/2100), 2(1900), 1(2100)
VoLTE Yes
for Verizon Wireless
4G (FDD) Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 13(700 c), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT)
4G (TDD) Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
3G Bands 5(850), 8(900), 2(1900), 1(2100)
for U.S. Cellular
4G (FDD) Bands 2(1900), 4(AWS-1), 5(850), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 25(1900+)
4G (TDD) Bands 38(2600), 39(1900+), 40(2300)
Data Speed LTE-A, HSPA, UMTS
with Dual SIM
System chip Samsung Exynos 9 Octa 8895 (10 nm)
Processor Octa-core
2500 MHz
Exynos M2 "Mongoose"and ARM Cortex-A53
GPU Mali-G71 MP20
Dual SIM Yes
FCC OKs Cingular\'s purchase of AT&T Wireless