Display
Size:
5.5 inches
6.5 inches
Resolution:
1280 x 720 pixels, 267 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI
Technology:
IPS LCD
IPS LCD
Refresh rate:
60Hz
Screen-to-body:
71.10 %
79.20 %
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip:
MediaTek MT6737 (28 nm)
Mediatek Helio P35 MT6765 (12 nm)
Processor:
Quad-core, 1100 MHz, ARM Cortex-A53, 64-bit
Octa-core, 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53, 64-bit
GPU:
Mali-T720 MP2
PowerVR GE8320
RAM:
3GB
3GB LPDDR4
Internal storage:
32GB
32GB (eMMC 5.1), available to use: 19.8 GB
Storage expansion:
microSDXC up to 64 GB
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
Android (6.0 Marshmallow)
Android (10), Samsung One UI
Battery
Capacity:
4000 mAh
4000 mAh
Type:
Li - Polymer, Not user replaceable
Charging:
Fast charging
Max charge speed:
Wired: 15.0W
Camera
Rear:
Single camera
Quad camera
Main camera:
13 MP (PDAF)
16 MP (PDAF)
Specifications:
Aperture size: F2.0; Sensor size: 1/3.2"; 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
Flash:
LED
LED
Video recording:
1920x1080 (Full HD) (30 fps)
1920x1080 (Full HD) (30 fps)
Features:
HDR, Video calling, Video sharing
Front:
5 MP (Flash)
13 MP
Video capture:
1920x1080 (Full HD)
Design
Dimensions:
6.02 x 3.02 x 0.41 inches (153 x 76.6 x 10.5 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)
Weight:
6.74 oz (191.0 g)
6.81 oz (193.0 g)
Materials:
Back: Aluminum
Back: Plastic; Frame: Plastic
Biometrics:
Fingerprint (touch)
Keys:
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Gray
Black
Cellular
4G (FDD):
Bands 2(1900), 4(AWS-1), 7(2600), 12(700 a), 17(700 b)
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 38(2600), 39(1900+), 40(2300), 41(2600+)
3G:
Bands 5(850), 4(1700/2100), 2(1900), 1(2100)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed:
LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
SIM type:
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; Hotspot, Wi-Fi Direct
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:
Mass storage device, Charging
Charging
Location:
GPS, A-GPS
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer
Accelerometer, Gyroscope, Compass
Other:
Tethering, Computer sync, OTA sync
NFC
Hearing aid compatible:
M4, T3
Phone features
Notifications:
Haptic feedback
Other features:
Voice dialing, Voice commands, Voice recording
Regulatory Approval
FCC approval:
Date approved:
Oct 21, 2016
Apr 17, 2020
FCC ID value:
YHLBLUR1PLUS
ZCASMA215U
Measured SAR:
Head:
0.95 W/kg
0.42 W/kg
Body:
1.41 W/kg
1.27 W/kg
Simultaneous Transmission:
1.56 W/kg
1.27 W/kg
Wireless Router:
1.56 W/kg
1.27 W/kg
Buyers information
Price:
$ 250
In The Box:
This is the official Samsung Galaxy A21 User Guide in English provided from the manufacturer.
Availability
Officially announced:
Apr 28, 2017
Apr 08, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless