Samsung Galaxy J7 Star vs Google Pixel 3a

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Display

Display size

5.5 inches
5.6 inches

Resolution

720 x 1280 pixels
1080 x 2220 pixels

Pixel density

267 ppi
444 ppi

Technology

TFT
OLED

Screen-to-body ratio

71.45 %
73.93 %

Features

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

Camera

Rear

Single camera
Single camera

Main camera

13 megapixels
12.2 megapixels

Hardware Features

Phase detection autofocus
Optical image stabilization, Phase detection autofocus

Specifications

Aperture size: F1.7; Focal length: 28 mm; Sensor size: 1/3.06"; Pixel size: 1.12 μm
Aperture size: F1.8; Focal length: 28 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm

Flash

LED
Dual LED

Video recording

1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)

Features

Video calling, Video sharing
Optical image stabilization, Digital image stabilization, Video calling, Video sharing

Front

13 megapixels
8 megapixels

Design

Dimensions

6.03 x 3 x 0.34 inches (153.2 x 76.2 x 8.6 mm)
5.96 x 2.76 x 0.32 inches (151.3 x 70.1 x 8.2 mm)

Weight

6.38 oz (181 g)
the average is 6 oz (172 g)
5.19 oz (147 g)
the average is 6 oz (172 g)

Materials

 
Back: Plastic

Biometrics

2D Face unlock
Fingerprint (touch)

Features

Touch sensitive control keys
 

Colors

Blue
Black, Purple, White

Hardware & Performance

System chip

Samsung Exynos 7 Octa 7870
Qualcomm Snapdragon 670 SDM670

Processor

Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2000 MHz, Kryo 360, 64-bit, 10 nm

GPU

Mali-T830 MP1
Adreno 615

RAM

2 GB
4 GB

Internal storage

32 GB
64 GB, not expandable

Storage expansion

up to 400 GB
 

OS

Android (8.0 Oreo)
Android (9.0 Pie)

Battery

Capacity

3300 mAh
3000 mAh

Charging

 
USB Power Delivery

Talk time

27.65 hours
the average is 23 h (1379 min)
 

Stand-by time

27.9 days (670 hours)
the average is 21 days (498 h)
 

Music playback

76.70 hours
 

Video playback

19.00 hours
 

Cellular

LTE (FDD)

Bands 2, 4, 5, 12, 66, 71
Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 32, 66

LTE (TDD)

 
Bands 38, 40, 41

UMTS

850, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz

GSM

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

CDMA

 
800, 1900 MHz

Data

LTE Cat 4 (150/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 11 (600/75 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

SIM type

Nano SIM
Nano SIM

HD Voice

Yes
Yes

Connectivity

Bluetooth

4.2
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
Mass storage device

Location

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

Other

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

Phone features

Sensors

Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Barometer

Notifications

Haptic feedback, Music ringtones, Vibration, Flight mode, Silent mode, Speakerphone
Haptic feedback, Music ringtones, Vibration

Hearing aid compatibility

M3, T3
M3, T3

Other features

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

Multimedia

Screen mirroring

Wireless screen share
Wireless screen share

Speakers

Earpiece, Loudspeaker
Earpiece, Multiple speakers

Headphones connector

3.5mm
3.5mm

Additional microphone(s)

 
for Noise cancellation

Regulatory Approval

FCC approval

 
 

Date approved

May 10, 2018
Feb 25, 2019

FCC ID value: A3LSMJ737T link
FCC ID value: A4RG020G link

FCC measured SAR

 
 

Head

1.36 W/kg
1.15 W/kg

Body

1.01 W/kg
1.13 W/kg

Simultaneous Transmission

1.58 W/kg
1.59 W/kg

Wireless Router

1.11 W/kg
1.19 W/kg

Phablet

3.60 W/kg
 

Shopping information

In The Box

USB cable, Wall charging adapter, Start guide, Terms & Conditions
18W USB-C power adapter, 1M USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool

MSRP price

 
$ 399
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