Display
Size:
6.7 inches
6.4 inches
Resolution:
2400 x 1080 pixels, 20:9 ratio, 393 PPI
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
Technology:
Super AMOLED Plus
Super AMOLED
Screen-to-body:
86.82 %
84.11 %
Peak brightness:
420 cd/m2 (nit)
420 cd/m2 (nit)
Features:
Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Proximity sensor
Hardware
System chip:
Exynos 9825
Exynos 9611
Processor:
Quad-core, 2730 MHz, Cortex-A55, 7 nm
Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm
GPU:
ARM Mali-G76 MP12
Mali-G72 MP3
RAM:
6GB LPDDR4
4GB LPDDR4
Internal storage:
128GB (UFS 2.1)
64GB, available to use: 49 GB
Storage expansion:
microSDXC up to 1024 GB
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
Android (11), One 3.1 UI
Android (11, 10), Samsung One UI
Battery
Capacity:
7000 mAh
6000 mAh
Type:
Not user replaceable
Li - Polymer, Not user replaceable
Charging:
Samsung Adaptive Fast Charging
Fast charging
Max charge speed:
Wired: 25.0W
Camera
Rear:
Quad camera
Triple camera
Main camera:
64 MP (Autofocus)
48 MP (PDAF)
Specifications:
Aperture size: F1.8; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera:
12 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications:
Aperture size: F2.2
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Third camera:
5 MP (Macro)
5 MP (Depth information)
Specifications:
Aperture size: F2.4
Aperture size: F2.2
Fourth camera:
5 MP (Macro)
Fifth camera:
5 MP (Depth information)
Specifications:
Aperture size: F2.4
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
Features:
EIS
Front:
32 MP
20 MP (HDR)
Video capture:
3840x2160 (4K UHD) (30 fps)
1920x1080 (Full HD)
Design
Dimensions:
6.45 x 3.00 x 0.37 inches (163.9 x 76.3 x 9.5 mm)
6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)
Weight:
7.69 oz (218.0 g)
6.63 oz (188.0 g)
Materials:
Back: Plastic; Frame: Plastic
Biometrics:
Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Keys:
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Laser Green, Laser Blue, Laser Grey
Midnight blue, Raven black
Cellular
LTE (FDD):
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
LTE (TDD):
Bands 38(2600), 40(2300), 41(2600+)
UMTS:
Bands 1(2100), 5(850), 8(900)
Bands 5(850), 8(900), 2(1900), 1(2100)
Data Speed:
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
Yes
SIM type:
Nano SIM
Nano SIM
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features:
Dolby Atmos
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM, Stereo, RDS
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), USB 2.0
Features:
Charging, Mass storage device
Charging
Location:
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope
Other:
NFC
Regulatory Approval
FCC approval:
Date approved:
Jan 15, 2021
FCC ID value:
A3LSMM625F
Measured SAR:
Head:
0.78 W/kg
Body:
0.98 W/kg
Simultaneous Transmission:
1.59 W/kg
Wireless Router:
0.96 W/kg
Buyers information
In The Box:
Handset, Travel Adaptor (25W), Data Cable (USB Type-C to Type-C), Sim Ejector Pin, Quick Start Guide
This is the official Samsung Galaxy M21 User Guide in English provided from the manufacturer.
Availability
Officially announced:
Feb 15, 2021
Mar 18, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless