Display
Size:
6.4 inches
6.2 inches
Resolution:
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2960 x 1440 pixels, 18.5:9 ratio, 531 PPI
Technology:
Super AMOLED
Super AMOLED
Screen-to-body:
84.11 %
83.68 %
Peak brightness:
420 cd/m2 (nit)
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Proximity sensor
HDR support, Scratch-resistant glass (Corning Gorilla Glass 5), Ambient light sensor, Proximity sensor
Hardware
System chip:
Exynos 9611 (10 nm)
Qualcomm Snapdragon 845 SDM845 (10 nm)
Processor:
Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 2800 MHz, Kryo 385, 64-bit
GPU:
Mali-G72 MP3
Adreno 630
RAM:
4GB LPDDR4
6GB LPDDR4
Internal storage:
64GB, available to use: 49 GB
64GB
Storage expansion:
microSDXC up to 512 GB
microSDXC up to 400 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10), Samsung One UI
Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI
Battery
Capacity:
6000 mAh
3500 mAh
Type:
Li - Polymer, Not user replaceable
Li - Ion, Not user replaceable
Charging:
Fast charging
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging
Camera
Rear:
Triple camera
Dual camera
Main camera:
48 MP (PDAF)
12 MP (OIS, PDAF)
Specifications:
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Aperture size: F1.5/F2.4; Focal length: 26 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Second camera:
8 MP (Ultra-wide)
12 MP (Telephoto, OIS, Autofocus)
Specifications:
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Optical zoom: 2.0x; Aperture size: F2.4; Focal Length: 52 mm; Sensor size: 1/3.6"; Pixel size: 1 μm
Third camera:
5 MP (Depth information)
Specifications:
Aperture size: F2.2
Flash:
LED
LED
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
Features:
EIS
HDR, Time-lapse video, Hyperlapse, Continuous autofocus, Object tracking, Picture-taking during video recording, EIS, Video calling, Video sharing
Front:
20 MP (HDR)
8 MP (Autofocus, HDR)
Video capture:
1920x1080 (Full HD)
2560x1440 (QHD) (30 fps)
Design
Dimensions:
6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)
6.22 x 2.91 x 0.33 inches (158.1 x 73.8 x 8.5 mm)
Weight:
6.63 oz (188.0 g)
6.67 oz (189.0 g)
Materials:
Back: Plastic; Frame: Plastic
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Resistance:
Water, Dust; IP68
Biometrics:
2D Face unlock, Fingerprint (touch)
Iris scanner, 2D Face unlock, Fingerprint (touch)
Features:
Notification light
Keys:
Right: Volume control, Lock/Unlock key
Left: Volume control, Other; Right: Lock/Unlock key
Colors:
Midnight blue, Raven black
Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue, Polaris blue
Cellular
4G (FDD):
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
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), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD):
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46
3G:
Bands 1(2100), 2(1900), 5(850), 8(900)
Bands 5(850), 8(900), 4(1700/2100), 2(1900), 1(2100)
Data Speed:
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Pro Cat 18 (1200/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA
Dual SIM:
Yes
SIM type:
Nano SIM
Nano SIM
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Multiple speakers
Features:
Dolby Atmos
32-Bit DAC, Dolby Atmos, aptX-HD
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM
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; MIMO, Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.1
Features:
Charging
Charging, OTG, Video out
Location:
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou
Sensors:
Accelerometer, Gyroscope
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other:
NFC, ANT+
Regulatory Approval
FCC approval:
Date approved:
Jan 11, 2018
FCC ID value:
A3LSMG965U
Measured SAR:
Head:
0.36 W/kg
Body:
0.79 W/kg
Simultaneous Transmission:
1.59 W/kg
Wireless Router:
1.04 W/kg
Phablet:
3.94 W/kg
Buyers information
Price:
$ 840
In The Box:
This is the official Samsung Galaxy M21 User Guide in English provided from the manufacturer.
Availability
Officially announced:
Mar 18, 2020
Feb 25, 2018
FCC OKs Cingular\'s purchase of AT&T Wireless