Samsung Galaxy S7 vs Samsung Galaxy J7 Star

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Display

Display size

5.1 inches
5.5 inches

Resolution

1440 x 2560 pixels
720 x 1280 pixels

Pixel density

576 ppi
267 ppi

Technology

Super AMOLED
TFT

Screen-to-body ratio

72.30 %
71.45 %

Features

Scratch-resistant glass (Corning Gorilla Glass 4), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor

Camera

Rear

Single camera
Single camera

Main camera

12 megapixels
13 megapixels

Hardware Features

Optical image stabilization, Phase detection autofocus
Phase detection autofocus

Specifications

Aperture size: F1.7; Focal length: 26 mm; Sensor size: 1/2.5"; Pixel size: 1.4 μm
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), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (240 fps)
1920x1080 (Full HD) (30 fps)

Features

High Dynamic Range mode (HDR), Picture-taking during video recording, Video calling, Video sharing
Video calling, Video sharing

Front

5 megapixels
13 megapixels

Features

High Dynamic Range mode (HDR)
 

Design

Dimensions

5.61 x 2.74 x 0.31 inches (142.4 x 69.6 x 7.9 mm)
6.03 x 3 x 0.34 inches (153.2 x 76.2 x 8.6 mm)

Weight

5.36 oz (152 g)
the average is 6 oz (172 g)
6.38 oz (181 g)
the average is 6 oz (172 g)

Materials

Back: Glass (Corning Gorilla Glass 4); Frame: Aluminum
 

Resistance

Water, Dust
 

IP certified

IP 68
 

Biometrics

Fingerprint (touch)
2D Face unlock

Features

Touch sensitive control keys
Touch sensitive control keys

Colors

Black, Gold, Silver, Pink, White
Blue

Hardware & Performance

System chip

Qualcomm Snapdragon 820 MSM8996
Samsung Exynos 7 Octa 7870

Processor

Quad-core, 2200 MHz, Kryo, 64-bit, 14 nm
Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm

GPU

Adreno 530
Mali-T830 MP1

RAM

4 GB
2 GB

Internal storage

32 GB
32 GB

Maximum User Storage

24.5 GB
 

Storage expansion

up to 200 GB
up to 400 GB

OS

Android (8.0 Oreo, 7.0 Nougat, 6.0 Marshmallow), Samsung TouchWiz UI
Android (8.0 Oreo)

Battery

Capacity

3000 mAh
3300 mAh

Charging

Qualcomm Quick Charge 2.0
 

Talk time

 
27.65 hours
the average is 22 h (1342 min)

Stand-by time

 
27.9 days (670 hours)
the average is 20 days (480 h)

Talk time (3G)

28.00 hours
the average is 23 h (1364 min)
 

Internet use

 
 

3G

11 hours
 

LTE

13 hours
 

Wi-Fi

14 hours
 

Music playback

55.00 hours
76.70 hours

Video playback

16.00 hours
19.00 hours

Cellular

LTE (FDD)

Bands 1, 2, 3, 4, 5, 7, 8, 12, 18, 19, 20, 29, 30
Bands 2, 4, 5, 12, 66, 71

LTE (TDD)

Bands 38, 39, 40, 41
 

UMTS

850, 1700/2100, 1900, 2100 MHz
850, 1700/2100, 1900, 2100 MHz

GSM

850, 900, 1800, 1900 MHz
850, 900, 1800, 1900 MHz

Data

LTE-A Cat 9 (450/50 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

VoLTE

Yes
 

Connectivity

Bluetooth

4.2
4.2

Wi-Fi

802.11 a, b, g, n, ac, dual-band
802.11 a, b, g, n, ac, dual-band

USB

USB 2.0
USB 2.0

Connector

microUSB
microUSB

Features

Mass storage device, USB OTG, USB charging
Mass storage device

Mobile Payment

Samsung Pay
 

Location

GPS, A-GPS, Glonass
GPS, A-GPS, Glonass

Other

NFC, ANT+, UMA (Wi-Fi Calling), Tethering, Computer sync, OTA sync
NFC, ANT+, UMA (Wi-Fi Calling), VoIP, Tethering, Computer sync, OTA sync

Phone features

Sensors

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

Notifications

Haptic feedback, Music ringtones (MP3), Polyphonic ringtones, Vibration, Flight mode, Silent mode, Speakerphone
Haptic feedback, Music ringtones, Vibration, Flight mode, Silent mode, Speakerphone

Hearing aid compatibility

M4, T3
M3, T3

Other features

Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording, TTY/TDD

Multimedia

Screen mirroring

DLNA, Wireless screen share
Wireless screen share

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Headphones connector

3.5mm
3.5mm

Additional microphone(s)

for Noise cancellation
 

Regulatory Approval

FCC approval

 
 

Date approved

Feb 12, 2016
May 10, 2018

FCC ID value: A3LSMG930F link
FCC ID value: A3LSMJ737T link

FCC measured SAR

 
 

Head

0.43 W/kg
1.36 W/kg

Body

1.06 W/kg
1.01 W/kg

Simultaneous Transmission

1.59 W/kg
1.58 W/kg

Wireless Router

1.03 W/kg
1.11 W/kg

Phablet

 
3.60 W/kg

Shopping information

In The Box

 
USB cable, Wall charging adapter, Start guide, Terms & Conditions

MSRP price

$ 699
 
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