Samsung Galaxy J7 (2017) vs Samsung Galaxy A30

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Display

Display size

5.5 inches
6.4 inches

Resolution

1080 x 1920 pixels
1080 x 2340 pixels

Pixel density

401 ppi
403 ppi

Technology

Super AMOLED
Super AMOLED

Screen-to-body ratio

73.28 %
85.24 %

Features

Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Camera

Rear

Single camera
Dual camera

Main camera

13 megapixels
16 megapixels

Hardware Features

Autofocus
Phase detection autofocus

Specifications

Aperture size: F1.7
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm

Second camera

 
5 megapixels

Hardware Features

 
Ultra-wide

Specifications

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

Flash

LED
LED

Video recording

1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)

Features

Video calling, Video sharing
Video calling, Video sharing

Front

13 megapixels
16 megapixels

Features

Flash
 

Design

Dimensions

6.00 x 2.94 x 0.31 inches (152.5 x 74.8 x 8 mm)
6.24 x 2.94 x 0.30 inches (158.5 x 74.7 x 7.7 mm)

Weight

6.38 oz (181 g)
the average is 6 oz (172 g)
5.82 oz (165 g)
the average is 6 oz (172 g)

Materials

Back: Aluminum
Back: Plastic

Biometrics

Fingerprint (touch)
2D Face unlock, Fingerprint (touch)

Features

Touch sensitive control keys
 

Colors

Black, Gold, Silver, Pink
Black, Blue, White

Hardware & Performance

System chip

Samsung Exynos 7 Octa 7870
Samsung Exynos 7 Octa 7904

Processor

Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm

GPU

Mali-T830 MP2
Mali-G71 MP2

RAM

3 GB
4 GB

Internal storage

16 GB
64 GB

Maximum User Storage

10 GB
49.6 GB

Storage expansion

up to 256 GB
up to 512 GB

OS

Android (9.0 Pie, 7.0 Nougat), Samsung One UI
Android (9.0 Pie), Samsung One UI

Battery

Capacity

3600 mAh
4000 mAh

Charging

 
Samsung Adaptive Fast Charging

Talk time (3G)

24.00 hours
the average is 23 h (1364 min)
23.00 hours
the average is 23 h (1364 min)

Internet use

 
 

3G

12 hours
12 hours

LTE

15 hours
14 hours

Wi-Fi

16 hours
15 hours

Music playback

59.00 hours
77.00 hours

Video playback

18.00 hours
18.00 hours

Cellular

LTE (FDD)

Bands 1, 3, 5, 7, 8, 20
Bands 1, 3, 5, 7, 8, 20

LTE (TDD)

Bands 40
Bands 38, 40, 41

UMTS

850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz

GSM

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

Data

LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

 
Yes

SIM type

Nano SIM
Nano SIM

VoLTE

Yes
Yes

Connectivity

Bluetooth

4.1
5.0

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
USB Type-C (reversible)

Features

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

Mobile Payment

Samsung Pay
 

Location

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

Other

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

Phone features

Sensors

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

Notifications

Haptic feedback
Haptic feedback, Music ringtones, Vibration

Other features

Voice dialing, Voice commands, Voice recording
Voice dialing, Voice commands, Voice recording

Multimedia

Screen mirroring

Wireless screen share
Wireless screen share

Radio

FM
FM

Speakers

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Headphones connector

3.5mm
3.5mm

Additional microphone(s)

 
for Noise cancellation

Regulatory Approval

FCC approval

 
 

Date approved

 
Feb 14, 2019

 
FCC ID value: A3LSMA305F link

FCC measured SAR

 
 

Head

 
0.32 W/kg

Body

 
0.52 W/kg

Simultaneous Transmission

 
1.43 W/kg

Wireless Router

 
1.15 W/kg
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