Samsung Galaxy J7 Prime vs Samsung Galaxy A21

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Display

Size

5.5 inches
6.5 inches

Resolution

1920 x 1080 pixels,
401 PPI
1600 x 720 pixels, 20:9 ratio,
270 PPI

Technology

IPS LCD
IPS LCD

Screen-to-body

73.39 %
79.20 %

Features

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

Hardware

System chip

Samsung Exynos 7 Octa 7870
Mediatek Helio P35

Processor

Octa-core, 1600 MHz, ARM Cortex-A53, 64-bit, 14 nm
Octa-core, 2300 MHz, Arm Cortex-A53, 64-bit, 12 nm

GPU

Mali-T830 MP2
PowerVR GE8320

RAM

3GB LPDDR3
3GB LPDDR4

Internal storage

16GB, available to use: 10.3 GB
32GB (eMMC 5.1), available to use: 19.8 GB

Storage expansion

microSDXC up to 256 GB
microSDXC up to 512 GB

OS

Android (7.0 Nougat, 6.0 Marshmallow), Samsung Experience UI
Android (10), Samsung One UI

Battery

Capacity

3300 mAh
4000 mAh

Type

Li - Ion, Not user replaceable
Li - Polymer, Not user replaceable

Charging

 
Fast charging

Max charge speed

 
Wired: 15.0W

Camera

Rear

Single camera
Quad camera

Main camera

13 MP (Autofocus, CMOS image sensor)
16 MP (PDAF)

Specifications

Aperture size: F1.9
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm

Second camera

 
8 MP (Ultra-wide)

Specifications

 
Aperture size: F2.2; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera

 
2 MP (Macro)

Specifications

 
Aperture size: F2.4

Fourth camera

 
2 MP (Depth information)

Specifications

 
Aperture size: F2.4

Video recording

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

Features

Video calling, Video sharing
 

Front

8 MP
13 MP

Design

Dimensions

5.97 x 2.95 x 0.31 inches (151.7 x 75 x 8 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)

Weight

5.89 oz (167.0 g)
the average is 6.2 oz (176 g)
6.81 oz (193.0 g)
the average is 6.2 oz (176 g)

Materials

Back: Metal
Back: Plastic; Frame: Plastic

Biometrics

Fingerprint (touch)
Fingerprint (touch)

Features

Touch sensitive control keys
 

Colors

Black, Gold, Rose gold
Black

Cellular

LTE (FDD)

Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
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), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)

LTE (TDD)

Bands 38(2600), 40(2300)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)

UMTS

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

Data Speed

 
LTE-A Cat 6 (300/50 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

Album art cover, Background playback
 

Screen mirroring

Wireless screen share
Wireless screen share

Radio

 
FM

Connectivity & Features

Bluetooth

4.1
5.0

Wi-Fi

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

USB

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

Features

Charging, OTG, Mass storage device
Charging

Location

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

Sensors

Accelerometer
Accelerometer, Gyroscope, Compass

Other

ANT+, Tethering, Computer sync, OTA sync
NFC

Regulatory Approval

FCC approval

 
 

Date approved

Aug 18, 2016
Apr 17, 2020

FCC ID value: A3LSMG610F link
FCC ID value: ZCASMA215U link

Measured SAR

 
 

Head

0.43 W/kg
0.42 W/kg

Body

1.03 W/kg
1.27 W/kg

Simultaneous Transmission

1.09 W/kg
1.27 W/kg

Wireless Router

1.03 W/kg
1.27 W/kg

Buyers information

Price

 
$ 250
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