Samsung Galaxy M21

Brand and model

Brand	Samsung
Model	Galaxy M21

Design

Width	75.1 mm 7.51 cm 0.25 ft 2.96 in
Height	159 mm 15.9 cm 0.52 ft 6.26 in
Thickness	8.9 mm 0.89 cm 0.03 ft 0.35 in
Weight	188 g 0.41 lbs 6.63 oz
Volume	106.27 cm³ 6.45 in³
Colors	Midnight Blue Raven Black
Body materials	Plastic

SIM card

SIM card type	Nano-SIM (4FF — fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)
Number of SIM cards	2
Features	Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)

Networks

GSM	GSM 850 MHz (B5) GSM 900 MHz (B8) GSM 1800 MHz (B3) GSM 1900 MHz (B2)
UMTS	UMTS 850 MHz (B5) UMTS 900 MHz (B8) UMTS 1900 MHz (B2) UMTS 2100 MHz (B1)
LTE	LTE-FDD 800 MHz (B20) LTE-FDD 850 MHz (B5) LTE-FDD 900 MHz (B8) LTE-FDD 1800 MHz (B3) LTE-FDD 2100 MHz (B1) LTE-FDD 2600 MHz (B7) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38)

Mobile network technologies and bandwidth

Mobile network technologies

UMTS (384 kbit/s ) EDGE GPRS HSPA+ (HSUPA 5.76 Mbit/s , HSDPA 42 Mbit/s ) LTE

Operating system

Operating system (OS)	Android 10
User interface (UI)	One UI 2.0

System on Chip (SoC)

SoC	Samsung Exynos 7 Octa 9611
Process technology	10 nm
CPU	4x 2.3 GHz ARM Cortex-A73, 4x 1.7 GHz ARM Cortex-A53
CPU bits	64 bit
Instruction set	ARMv8-A
CPU cores	8
CPU frequency	2300 MHz
GPU	ARM Mali-G72 MP3
GPU cores	3
RAM capacity	4 GB 6 GB
RAM type	LPDDR4X
RAM channels	Double channel

Storage

Storage

64 GB 128 GB

Memory cards

Types	microSD microSDHC microSDXC
	UFS 2.1

Display

Type/technology	Super AMOLED
Diagonal size	6.4 in 162.56 mm 16.26 cm
Width	2.68 in 68.12 mm 6.81 cm
Height	5.81 in 147.6 mm 14.76 cm
Aspect ratio	2.167:1
Resolution	1080 x 2340 pixels
Pixel density	403 ppi 158 ppcm
Color depth	24 bit 16777216 colors
Display area	84.48 %
Other features	Capacitive Multi-touch
	Infinity U Display 2.5D curved glass screen Corning Gorilla Glass 3 Peak brightness — 420 cd/m² 78960:1

Sensors

Sensors

Proximity Accelerometer Compass Gyroscope Geomagnetic Fingerprint Virtual Light Sensor

Rear camera

Sensor type	CMOS BSI (backside illumination)
Sensor format	1/2″
Pixel size	0.8 µm (micrometers) 0.000800 mm
Aperture	f/2
Focal length and 35 mm equivalent	26 mm *(35 mm / full frame)
Flash type	LED
Image resolution	8000 x 6000 pixels 48 MP
Video resolution	3840 x 2160 pixels 8.29 MP
Video FPS	30 fps
Features	Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF)
	Secondary rear camera — 5 MP (depth) Aperture size — f/2.2 (#2) Third rear camera — 8 MP (ultra-wide angle) Sensor size — 1/4″ (#3) Pixel size — 1.12 µm (#3) Aperture size — f/2.2 (#3) Angle of view — 123° (#3)

Front camera

Sensor type	CMOS BSI (backside illumination)
Aperture	f/2
Focal length and 35 mm equivalent	26 mm *(35 mm / full frame)
Image resolution	20 MP
Video resolution	1920 x 1080 pixels 2.07 MP
Video FPS	30 fps
Features	Face unlock

Audio

Speaker	Loudspeaker Earpiece
	Dolby Atmos for stereo headsets Widevine L1 Certification

Radio

Radio	Yes
	RDS

Tracking / Positioning

Tracking / Positioning

GPS A-GPS GLONASS BeiDou

Wi-Fi

Wi-Fi

802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) Wi-Fi Hotspot Wi-Fi Direct

Bluetooth

Version	5.0
Features	A2DP (Advanced Audio Distribution Profile) LE (Low Energy)

USB

Connector type	USB Type-C
Version	2.0
Features	Charging Mass storage On-The-Go

Headphone jack

Headphone jack

Yes

Connectivity

Connectivity

Computer sync OTA sync Tethering

Browser

Browser

HTML HTML5 CSS 3

Audio file formats/codecs

Audio file formats/codecs

AAC (Advanced Audio Coding) AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga) AMR-WB (Adaptive Multi-Rate Wideband, .awb) eAAC+ / aacPlus v2 / HE-AAC v2 FLAC (Free Lossless Audio Codec, .flac) M4A (MPEG-4 Audio, .m4a) MIDI MP3 (MPEG-2 Audio Layer II, .mp3) OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus) WMA (Windows Media Audio, .wma) WAV (Waveform Audio File Format, .wav, .wave)

Video file formats/codecs

Video file formats/codecs

3GPP (3rd Generation Partnership Project, .3gp) 3GPP2 (3rd Generation Partnership Project 2, .3g2) AVI (Audio Video Interleaved, .avi) Flash Video (.flv, .f4v, .f4p, .f4a, .f4b) H.263 H.264 / MPEG-4 Part 10 / AVC video H.265 / MPEG-H Part 2 / HEVC MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks) MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v) VC-1 VP8 VP9 WebM WMV (Windows Media Video, .wmv) WMV7 (Windows Media Video 7, .wmv) WMV8 (Windows Media Video 8, .wmv) Xvid

Battery

Capacity	6000 mAh
Type	Li-Ion
Charger output power	5 V / 3 A
Features	Fast charging Non-removable

Additional features

Additional features

SAR (Specific Absorption Rate) India: head — 0.468 W/kg