Samsung Galaxy J3 Emerge vs Samsung Galaxy A21 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Samsung Galaxy J3 Emerge Samsung Galaxy A21
Released · Jan 06, 2017
Released · Jun 29, 2020
5.0-inch
6.5-inch
Single camera
Quad camera
1.5GB · 16GB
3GB · 32GB
2600 mAh
4000 mAh

Design

Dimensions
5.55 x 2.76 x 0.34 inches
140.9 x 70.1 x 8.7 mm
6.61 x 3.02 x 0.32 inches
167.8 x 76.7 x 8.1 mm
Weight
5.19 oz (147.0 g) 6.81 oz (193.0 g)
Materials
Back: Plastic
Frame: Plastic
Biometrics
Fingerprint (touch)
Features
Touch sensitive control keys
Keys
Left: Volume control; Right: Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Silver Black

Display

Size
5.0-inch 6.5-inch
Resolution
1280x720px, 294 PPI 1600x720px, 20:9 ratio, 270 PPI
Technology
TFT IPS LCD
Refresh rate
60Hz
Screen-to-body
69.74 % 79.20 %
Colors
16 777 216
Features
Ambient light sensor, Proximity sensor Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 425 8917 (28 nm) Mediatek Helio P35 MT6765 (12 nm)
Processor
Quad-core
1400 MHz
ARM Cortex-A53
Octa-core
4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53
GPU
Adreno 308 PowerVR GE8320
RAM
1.5GB (LPDDR3) 3GB (LPDDR4)
Internal storage
16GB, available to use: 9.1 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 (6.0 Marshmallow) Android (10), Samsung One UI

Battery

Capacity
2600 mAh 4000 mAh
Type
Li - Ion Li - Polymer
Charging
Fast charging
Charge speed
Wired: 15.0W

Camera

Rear
Single camera Quad camera
Main camera
5 MP (Autofocus)
Aperture size: F1.9
16 MP (PDAF)
Aperture size: F1.8
Sensor size: 1/3.06"
Pixel size: 1 μm
Second camera
8 MP (Ultra-wide)
Aperture size: F2.2
Sensor size: 1/4"
Pixel size: 1.12 μm
Third camera
2 MP (Macro)
Aperture size: F2.4
Fourth camera
2 MP (Depth information)
Aperture size: F2.4
Flash
LED LED
Video recording
1920x1080 (Full HD) (30 fps)
Video calling, Video sharing
1920x1080 (Full HD) (30 fps)
Front
2 MP 13 MP, Video capture: 1920x1080 (Full HD)

Connectivity & Features

Bluetooth
4.2 5.0
WLAN
802.11 a,b,g,n,dual-band
Hotspot, Wi-Fi Direct
802.11 a,b,g,n,ac,dual-band
Wi-Fi Direct, Hotspot
USB
microUSB, USB 2.0 Type-C, USB 2.0
Hearing aid compatible
M3/T3 M4/T3
Location
GPS, A-GPS, Glonass GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope Accelerometer, Gyroscope, Compass
Other
Tethering, Computer sync, OTA sync NFC

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

Cellular

4G (FDD)
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 25(1900+), 26(850+) 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)
4G (TDD)
Bands 41(2600+) Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
3G
Bands 5(850), 4(1700/2100), 2(1900) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE Cat 4 (150/50 Mbit/s), HSPA 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 Yes

Phone Features

Notifications
Haptic feedback
Other features
Voice dialing, Voice commands, Voice recording, TTY/TDD

Regulatory Approval

FCC approval
Date approved: Oct 24, 2016
FCC ID value: A3LSMJ327P
Date approved: Apr 17, 2020
FCC ID value: ZCASMA215U
Measured SAR
Head: 0.49 W/kg
Body: 0.53 W/kg
Simultaneous Transmission: 1.24 W/kg
Wireless Router: 0.94 W/kg
Head: 0.42 W/kg
Body: 1.27 W/kg
Simultaneous Transmission: 1.27 W/kg
Wireless Router: 1.27 W/kg

Buyers information

MSRP
$ 250
In The Box
This is the official Samsu​ng Galaxy A21 User Guide in English provided from the manufacturer.

Availability

Officially announced
Jan 06, 2017 Apr 08, 2020

Alternative variants

OS Android (8.0 Oreo)
4G (FDD) Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 13(700 c)
HD Voice Yes
VoLTE Yes
Other UMA (Wi-Fi Calling)
FCC approval Date approved: Oct 11, 2017
FCC ID value: A3LSMJ327V
Measured SAR Head: 0.54 W/kg
Body: 0.82 W/kg
Simultaneous Transmission: 1.41 W/kg
Wireless Router: 0.99 W/kg
for Verizon
4G (FDD) Bands 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
4G (TDD) Bands 38(2600), 40(2300), 41(2600+)
3G Bands 5(850), 8(900), 2(1900), 1(2100)
OS Android (8.0 Oreo)
Colors Black
4G (FDD) Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 13(700 c)
HD Voice Yes
VoLTE Yes
Other UMA (Wi-Fi Calling)
FCC approval Date approved: Oct 11, 2017
FCC ID value: A3LSMJ327V
Measured SAR Head: 0.54 W/kg
Body: 0.82 W/kg
Simultaneous Transmission: 1.41 W/kg
Wireless Router: 0.99 W/kg
for Sprint
4G (FDD) Bands 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD) Bands 41(2600+)
FCC OKs Cingular\'s purchase of AT&T Wireless