Display
Size:
6.2 inches
6.5 inches
5.8 inches
Resolution:
2270 x 1080 pixels, 19:9 ratio, 403 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI
2340 x 1080 pixels, 19.5:9 ratio, 444 PPI
Technology:
IPS LCD
IPS LCD
OLED
Screen-to-body:
82.58 %
79.20 %
82.53 %
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
60Hz refresh rate, Ambient light sensor, Proximity sensor
60Hz refresh rate, HDR support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Hardware
System chip:
Qualcomm Snapdragon 632 SDM632
Mediatek Helio P35
Qualcomm Snapdragon 730 SM7150-AA
Processor:
Octa-core, 1800 MHz, Kryo 250, 64-bit, 14 nm
Octa-core, 2300 MHz, Arm Cortex-A53, 64-bit, 12 nm
Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm
GPU:
Adreno 506
PowerVR GE8320
Adreno 618
RAM:
4GB LPDDR4
3GB LPDDR4
6GB LPDDR4
Internal storage:
64GB
32GB (eMMC 5.1), available to use: 19.8 GB
128GB, not expandable
Storage expansion:
microSDXC up to 512 GB
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
Smartphone
OS:
Android (9.0 Pie)
Android (10), Samsung One UI
Android (11, 10)
Battery
Capacity:
3000 mAh
4000 mAh
3140 mAh
Type:
Not user replaceable
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging:
Motorola TurboPower
Fast charging
USB Power Delivery
Max charge speed:
Wired: 15.0W
Wired: 18.0W
Camera
Rear:
Dual camera
Quad camera
Single camera
Main camera:
12 MP (PDAF)
16 MP (PDAF)
12.2 MP (OIS, PDAF)
Specifications:
Aperture size: F1.8; Pixel size: 1.25 μm
Aperture size: F1.8; Sensor size: 1/3.06"; Pixel size: 1 μm
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Second camera:
5 MP (Depth information)
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:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (60 fps), 1280x720 (HD) (120 fps)
1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
Features:
Time-lapse video, Hyperlapse, EIS, Video calling, Video sharing
EIS
Front:
8 MP (HDR)
13 MP
8 MP
Video capture:
1920x1080 (Full HD)
1920x1080 (Full HD)
1920x1080 (Full HD)
Design
Dimensions:
6.18 x 2.96 x 0.31 inches (157 x 75.3 x 8 mm)
6.61 x 3.02 x 0.32 inches (167.8 x 76.7 x 8.1 mm)
5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)
Weight:
6.07 oz (172.0 g)
6.81 oz (193.0 g)
5.04 oz (143.0 g)
Materials:
Back: Glass (Corning Gorilla Glass 3); Frame: Plastic
Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic
Resistance:
Splash
Biometrics:
2D Face unlock, Fingerprint (touch)
Fingerprint (touch)
Fingerprint (touch)
Keys:
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Black, White
Black
Just black
Cellular
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+), 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)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 17(700 b), 18(800 Lower), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
LTE (TDD):
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
UMTS:
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Data Speed:
LTE-A Cat 7 (300/100 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
LTE-A Cat 11 (600/75 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
SIM type:
Nano SIM
Nano SIM
Nano SIM, eSIM
HD Voice:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Earpiece, Multiple speakers
Features:
Album art cover, Background playback
aptX, aptX-HD
Screen mirroring:
Wireless screen share
Wireless screen share
Wireless screen share
Radio:
FM
FM
Additional microphone(s):
for Noise cancellation
for Noise cancellation
Connectivity & Features
Bluetooth:
4.2
5.0
5.1
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
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.1
Features:
Charging, OTG, Mass storage device
Charging
Charging
Location:
GPS, A-GPS, Glonass, Galileo
GPS, A-GPS, Glonass, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Barometer
Other:
VoIP, Tethering, Computer sync, OTA sync
NFC
NFC
Hearing aid compatible:
M4, T3
M3, T4
Regulatory Approval
Measured SAR:
Head:
0.42 W/kg
1.18 W/kg
Body:
1.27 W/kg
1.19 W/kg
Simultaneous Transmission:
1.27 W/kg
1.59 W/kg
Wireless Router:
1.27 W/kg
1.00 W/kg
Buyers information
Price:
$ 299
$ 250
$ 349
In The Box:
15W TurboPower charger, USB-C Cable, SIM pin, Guides
This is the official Samsung Galaxy A21 User Guide in English provided from the manufacturer.
18W USB-C power adapter, 1 m USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool
Availability
Officially announced:
Feb 07, 2019
Apr 08, 2020
Aug 03, 2020
