Display
Size:
6.4 inches
6.4 inches
Resolution:
3040 x 1440 pixels, 19:9 ratio, 522 PPI
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
Technology:
Dynamic AMOLED
Super AMOLED
Screen-to-body:
88.63 %
84.11 %
Peak brightness:
420 cd/m2 (nit)
Features:
HDR support, Scratch-resistant glass (Corning Gorilla Glass 6), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Proximity sensor
Hardware
System chip:
Qualcomm Snapdragon 855 (7 nm)
Exynos 9611 (10 nm)
Processor:
Octa-core, 2800 MHz, Kryo 485, 64-bit
Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
GPU:
Adreno 640
Mali-G72 MP3
RAM:
8GB LPDDR4
4GB LPDDR4
Internal storage:
128GB, available to use: 109 GB
64GB, available to use: 49 GB
Storage expansion:
microSDXC up to 512 GB
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10, 9.0 Pie), Samsung One UI
Android (11, 10), Samsung One UI
Battery
Capacity:
4100 mAh
6000 mAh
Type:
Li - Ion, Not user replaceable
Li - Polymer, Not user replaceable
Charging:
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging
Fast charging
Camera
Rear:
Triple camera
Triple camera
Main camera:
12 MP (OIS, PDAF)
48 MP (PDAF)
Specifications:
Aperture size: F1.5/F2.4; Focal length: 26 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera:
12 MP (Telephoto, OIS, PDAF)
8 MP (Ultra-wide)
Specifications:
Optical zoom: 2.0x; Aperture size: F2.4; Focal Length: 52 mm; Sensor size: 1/3.6"; Pixel size: 1 μm
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Third camera:
16 MP (Ultra-wide)
5 MP (Depth information)
Specifications:
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/3.1"; Pixel size: 1 μm
Aperture size: F2.2
Flash:
LED
LED
Video recording:
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
Features:
HDR, Time-lapse video, Hyperlapse, EIS, Video calling, Video sharing
EIS
Front:
10 MP (Dual-Camera, Autofocus, HDR)
20 MP (HDR)
Video capture:
3840x2160 (4K UHD)
1920x1080 (Full HD)
Design
Dimensions:
6.20 x 2.92 x 0.31 inches (157.6 x 74.1 x 7.8 mm)
6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)
Weight:
6.17 oz (175.0 g)
6.63 oz (188.0 g)
Materials:
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Plastic; Frame: Plastic
Resistance:
Water, Dust; IP68
Biometrics:
2D Face unlock, Ultrasonic in-screen fingerprint
2D Face unlock, Fingerprint (touch)
Keys:
Left: Volume control, Other; Right: Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Prism blue, Prism black, Prism white, Prism green, Flamingo pink
Midnight blue, Raven 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), 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)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
4G (TDD):
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46
Bands 38(2600), 40(2300), 41(2600+)
3G:
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 5(850), 8(900)
Data Speed:
LTE-A Pro Cat 20 (2000/150 Mbit/s), LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
SIM type:
Nano SIM
Nano SIM
HD Voice:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Multiple speakers
Earpiece, Loudspeaker
Features:
32-Bit DAC, Dolby Atmos, aptX-HD
Dolby Atmos
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, ax, dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 3.1
Type-C (reversible), USB 2.0
Features:
Charging, OTG, Video out
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, Hall (for flip covers), Heart rate, Barometer
Accelerometer, Gyroscope
Other:
NFC, ANT+
Hearing aid compatible:
M4, T3
Regulatory Approval
FCC approval:
Date approved:
Feb 01, 2019
FCC ID value:
A3LSMG975U
Measured SAR:
Head:
0.41 W/kg
Body:
1.04 W/kg
Simultaneous Transmission:
1.59 W/kg
Wireless Router:
1.29 W/kg
Phablet:
3.99 W/kg
Buyers information
Price:
$ 1000
In The Box:
Data cable, Travel adapter, Ejection pin, USB Connector (OTG), Earphones sound by AKG, Quick start guide, Protective film
This is the official Samsung Galaxy M21 User Guide in English provided from the manufacturer.
Availability
Officially announced:
Feb 20, 2019
Mar 18, 2020