Display
Size:
5.2 inches
6.5 inches
Resolution:
1280 x 720 pixels, 16:9 ratio, 282 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI
Technology:
LCD
IPS LCD
Screen-to-body:
66.84 %
79.20 %
Features:
Ambient light sensor, Proximity sensor
60Hz refresh rate, Ambient light sensor, Proximity sensor
Hardware
System chip:
Qualcomm Snapdragon 425 MSM8917
Mediatek Helio P35
Processor:
Quad-core, 1400 MHz, ARM Cortex-A53, 64-bit, 28 nm
Octa-core, 2300 MHz, Arm Cortex-A53, 64-bit, 12 nm
GPU:
Adreno 308
PowerVR GE8320
RAM:
2GB LPDDR3
3GB LPDDR4
Internal storage:
16GB
32GB (eMMC 5.1), available to use: 19.8 GB
Storage expansion:
microSDXC up to 256 GB
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
Android (8.0 Oreo)
Android (10), Samsung One UI
Battery
Capacity:
2800 mAh
4000 mAh
Type:
Li - Ion, User replaceable
Li - Polymer, Not user replaceable
Charging:
Fast charging
Fast charging
Max charge speed:
Wired: 15.0W
Camera
Rear:
Single camera
Quad camera
Main camera:
8 MP (Autofocus)
16 MP (PDAF)
Specifications:
Aperture size: F2.0; Sensor size: 1/4"; Pixel size: 1.12 μm
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), 1280x720 (HD) (30 fps), 720x480 (DVD) (30 fps)
1920x1080 (Full HD) (30 fps)
Features:
Video calling, Video sharing
Front:
5 MP (Flash)
13 MP
Video capture:
1920x1080 (Full HD)
1920x1080 (Full HD)
Design
Dimensions:
5.94 x 2.91 x 0.35 inches (151 x 74 x 8.85 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)
Weight:
5.29 oz (150.0 g)
6.81 oz (193.0 g)
Materials:
Back: Plastic
Back: Plastic; Frame: Plastic
Resistance:
Splash
Biometrics:
Fingerprint (touch)
Fingerprint (touch)
Keys:
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Black, Gray, Blue
Black
Cellular
LTE (FDD):
Bands 1(2100), 2(1900), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 25(1900+), 26(850+), 30(2300 WCS), 66(AWS-3)
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), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
UMTS:
850, 900, 1700/2100, 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, UMTS
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
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
FM
Additional microphone(s):
Yes
Connectivity & Features
Bluetooth:
4.2
5.0
Wi-Fi:
802.11 a, b, g, n, dual-band; 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, Mass storage device
Charging
Location:
GPS, A-GPS, Glonass
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Compass
Accelerometer, Gyroscope, Compass
Other:
UMA (Wi-Fi Calling), VoIP, Tethering, Computer sync, OTA sync
NFC
Hearing aid compatible:
M3, T4
M4, T3
Regulatory Approval
Measured SAR:
Head:
1.35 W/kg
0.42 W/kg
Body:
1.23 W/kg
1.27 W/kg
Simultaneous Transmission:
1.27 W/kg
Wireless Router:
1.27 W/kg
Buyers information
Price:
$ 250
In The Box:
Charger and USB cable
This is the official Samsung Galaxy A21 User Guide in English provided from the manufacturer.
Availability
Officially announced:
Apr 19, 2018
Apr 08, 2020
