Display
Size:
4.7 inches
6.5 inches
Resolution:
1334 x 750 pixels, 16:9 ratio, 326 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI
Technology:
IPS LCD
IPS LCD
Refresh rate:
60Hz
Screen-to-body:
65.34 %
79.20 %
Peak brightness:
625 cd/m2 (nit)
Features:
Pressure-sensitive, Oleophobic coating, Scratch-resistant glass, Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip:
Apple A11 Bionic APL1W72 (10 nm)
Mediatek Helio P35 MT6765 (12 nm)
Processor:
Hexa-core, 2390 MHz, Monsoon and Mistral, 64-bit
Octa-core, 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53, 64-bit
GPU:
Apple 3-core GPU
PowerVR GE8320
RAM:
2GB LPDDR4
3GB LPDDR4
Internal storage:
256GB, not expandable
32GB (eMMC 5.1), available to use: 19.8 GB
Storage expansion:
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
iOS (15.x, 14.x, 13.x, 12.x, 11.x)
Android (10), Samsung One UI
Battery
Capacity:
1821 mAh
4000 mAh
Type:
Li - Ion, Not user replaceable
Li - Polymer, Not user replaceable
Charging:
USB Power Delivery, Qi wireless charging
Fast charging
Max charge speed:
Wired: 15.0W; Wireless: 7.5W
Wired: 15.0W
Camera
Rear:
Single camera
Quad camera
Main camera:
12 MP (Sapphire crystal lens cover, OIS, PDAF, CMOS image sensor, BSI sensor)
16 MP (PDAF)
Specifications:
Aperture size: F1.8; Focal length: 28 mm; Sensor size: 1/3"; Pixel size: 1.22 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:
Quad LED
LED
Video recording:
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps)
1920x1080 (Full HD) (30 fps)
Features:
OIS, Time-lapse video, Continuous autofocus, Picture-taking during video recording, Video light
Front:
7 MP (HDR)
13 MP
Video capture:
1920x1080 (Full HD)
1920x1080 (Full HD)
Design
Dimensions:
5.45 x 2.65 x 0.29 inches (138.4 x 67.3 x 7.3 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)
Weight:
5.22 oz (148.0 g)
6.81 oz (193.0 g)
Materials:
Back: Glass; Frame: Aluminum
Back: Plastic; Frame: Plastic
Resistance:
Water, Dust; IP67
Biometrics:
Fingerprint (touch)
Fingerprint (touch)
Keys:
Left: Volume control, Other; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Gold, Silver, Red, Space gray
Black
Cellular
4G (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), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 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)
4G (TDD):
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
3G:
Bands 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed:
LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
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
VoLTE:
Yes
Multimedia
Headphones:
No 3.5mm jack
3.5mm jack
Speakers:
Earpiece, Multiple speakers
Earpiece, Loudspeaker
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
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; MIMO, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB:
Lightning
Type-C (reversible), USB 2.0
Features:
Charging, Headphones port
Charging
Location:
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass, Barometer
Accelerometer, Gyroscope, Compass
Other:
NFC, UMA (Wi-Fi Calling)
NFC
Hearing aid compatible:
M3, T4
M4, T3
Regulatory Approval
FCC approval:
Date approved:
Sep 12, 2017
Apr 17, 2020
FCC ID value:
BCG-E3174A
ZCASMA215U
Measured SAR:
Head:
1.09 W/kg
0.42 W/kg
Body:
1.09 W/kg
1.27 W/kg
Simultaneous Transmission:
1.59 W/kg
1.27 W/kg
Wireless Router:
1.09 W/kg
1.27 W/kg
Buyers information
Price:
$ 849
$ 250
In The Box:
EarPods with Lighting connector, Lightning to 3.5mm headphone jack adapter, Lightning to USB Cable, USB Power Adapter, Documentation
This is the official Samsung Galaxy A21 User Guide in English provided from the manufacturer.
Availability
Officially announced:
Sep 12, 2017
Apr 08, 2020