Samsung Galaxy A21 vs T-Mobile Revvl 4+
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Display
Size
Resolution
Technology
IPS LCD
LCD
Screen-to-body
79.20 %
82.56 %
Features
Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip
Mediatek Helio P35
Qualcomm Snapdragon 665 SM6125
Processor
GPU
PowerVR GE8320
Adreno 610
RAM
Internal storage
32GB (eMMC 5.1), available to use: 19.8 GB
64GB
Storage expansion
microSDXC up to 512 GB
microSDXC up to 256 GB
Device type
Smartphone
Smartphone
OS
Android (10), Samsung One UI
Android (10)
Battery
Capacity
4000 mAh
4000 mAh
Type
Li - Polymer, Not user replaceable
Not user replaceable
Charging
Fast charging
Qualcomm Quick Charge 3.0
Max charge speed
Wired: 15.0W
Camera
Rear
Quad camera
Dual camera
Main camera
Specifications
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm
Aperture size: F1.8
Second camera
8 MP (Ultra-wide)
5 MP (Depth information)
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)
3840x2160 (4K UHD)
Front
13 MP
16 MP
Design
Dimensions
Weight
the average is 6.3 oz (179 g)
the average is 6.3 oz (179 g)
Materials
Back: Plastic; Frame: Plastic
Back: Plastic
Biometrics
Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors
Black
Steel gray
Cellular
Carrier locked
Yes
LTE (FDD)
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)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 66(AWS-3), 71(600)
LTE (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
UMTS
850, 900, 1700/2100, 1900, 2100 MHz
850, 1700/2100, 1900 MHz
Data Speed
SIM type
Nano SIM
Nano SIM
HD Voice
Yes
Yes
VoLTE
Yes
Multimedia
Headphones
3.5mm jack
3.5mm jack
Speakers
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Screen mirroring
Wireless screen share
Wireless screen share
Radio
FM
FM
Additional microphone(s)
for Noise cancellation
Connectivity & Features
Bluetooth
5.0
5.0
Wi-Fi
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0
Type-C (reversible)
Features
Charging
Charging
Location
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass
Accelerometer
Other
NFC
NFC
Hearing aid compatible
M4, T3
M3, T3
Regulatory Approval
FCC approval
Date approved
Apr 17, 2020
Jun 18, 2020
Measured SAR
Head
0.42 W/kg
1.02 W/kg
Body
1.27 W/kg
0.47 W/kg
Simultaneous Transmission
1.27 W/kg
1.47 W/kg
Wireless Router
1.27 W/kg
1.34 W/kg
Phablet
3.86 W/kg
Buyers information
Price
$ 250
$ 192
In The Box
Download the Samsung Galaxy A21 Manual as a PDF file.
Quick Start Guide, Charger Head, Data cable, Product Safety Information, SIM Tool
Availability
Officially announced
Apr 08, 2020
Aug 27, 2020
