Samsung Galaxy A20 vs Samsung Galaxy J7 Star Specs Comparison

Compare phone and tablet specifications of up to three devices at once.

Display

Size:

6.4 inches
5.5 inches

Resolution:

1560 x 720 pixels, 19.5:9 ratio, 268 PPI
1280 x 720 pixels, 16:9 ratio, 267 PPI

Technology:

Super AMOLED
TFT

Refresh rate:

60Hz

Screen-to-body:

84.95 %
71.45 %

Features:

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

Hardware

System chip:

Samsung Exynos 7884 (14 nm)
Samsung Exynos 7 Octa 7870 (14 nm)

Processor:

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

GPU:

Mali-G71 MP2
Mali-T830 MP1

RAM:

3GB LPDDR4
2GB LPDDR3

Internal storage:

32GB, available to use: 20.3 GB
32GB

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 400 GB

Device type:

Smartphone
Smartphone

OS:

Android (11, 10, 9.0 Pie), Samsung One UI
Android (9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity:

4000 mAh
3300 mAh

Type:

Not user replaceable
Li - Polymer, Not user replaceable

Charging:

Samsung Adaptive Fast Charging

Camera

Rear:

Dual camera
Single camera

Main camera:

13 MP (Autofocus)
13 MP (PDAF)

Specifications:

Aperture size: F1.9; Focal length: 27 mm; Sensor size: 1/3.1"; Pixel size: 1.12 μm
Aperture size: F1.7; Focal length: 28 mm; Sensor size: 1/3.06"; Pixel size: 1.12 μm

Second camera:

5 MP (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)

Front:

8 MP
13 MP

Design

Dimensions:

6.24 x 2.94 x 0.31 inches (158.4 x 74.7 x 7.8 mm)
6.03 x 3 x 0.34 inches (153.2 x 76.2 x 8.6 mm)

Weight:

5.96 oz (169.0 g)
6.38 oz (181.0 g)

Materials:

Back: Plastic

Biometrics:

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

Features:

Touch sensitive control keys

Keys:

Right: Volume control, Lock/Unlock key
Left: Volume control; Right: Lock/Unlock key

Colors:

Black,Deep blue, Red
Blue

Cellular

4G (FDD):

Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 13(700 c), 20(800 DD), 28(700 APT), 66(AWS-3)
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 66(AWS-3), 71(600)

3G:

Bands 1(2100), 2(1900), 5(850), 8(900)
Bands 5(850), 4(1700/2100), 2(1900), 1(2100)

Data Speed:

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

Multimedia

Headphones:

3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Loudspeaker

Features:

Dolby Atmos

Screen mirroring:

Wireless screen share
Wireless screen share

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
4.2

Wi-Fi:

802.11 a, b, g, n, ac; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0
microUSB, USB 2.0

Features:

Charging
Charging

Location:

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

Sensors:

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

Other:

NFC, ANT+, UMA (Wi-Fi Calling)

Hearing aid compatible:

M3, T3

Regulatory Approval

FCC approval:

Date approved:

Jun 19, 2019
May 10, 2018

FCC ID value:

A3LSMA205U
A3LSMJ737T

Measured SAR:

Head:

1.09 W/kg
1.36 W/kg

Body:

0.60 W/kg
1.01 W/kg

Simultaneous Transmission:

1.37 W/kg
1.58 W/kg

Wireless Router:

1.00 W/kg
1.11 W/kg

Phablet:

3.94 W/kg
3.60 W/kg

Buyers information

Price:

$ 250

In The Box:

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