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Samsung Galaxy M21 vs Samsung Galaxy S9 vs Samsung Galaxy S9+

Compare phone and tablet specifications of up to three devices at once.

Comparison mode:

Display

Size:

6.4 inches
5.8 inches
6.2 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2960 x 1440 pixels, 18.5:9 ratio, 568 PPI
2960 x 1440 pixels, 18.5:9 ratio, 531 PPI

Technology:

Super AMOLED
Super AMOLED
Super AMOLED

Screen-to-body:

84.11 %
84.36 %
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
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)
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
Octa-core, 2800 MHz, Kryo 385, 64-bit

GPU:

Mali-G72 MP3
Adreno 630
Adreno 630

RAM:

4GB LPDDR4
4GB LPDDR4
6GB LPDDR4

Internal storage:

64GB, available to use: 49 GB
64GB
64GB

Storage expansion:

microSDXC up to 512 GB
microSDXC up to 400 GB
microSDXC up to 400 GB

Device type:

Smartphone
Smartphone
Smartphone

OS:

Android (11, 10), Samsung One UI
Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI
Android (10, 9.0 Pie, 8.0 Oreo), Samsung One UI

Battery

Capacity:

6000 mAh
3000 mAh
3500 mAh

Type:

Li - Polymer, Not user replaceable
Li - Ion, 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
Qualcomm Quick Charge 2.0, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging

Camera

Rear:

Triple camera
Single camera
Dual camera

Main camera:

48 MP (PDAF)
12 MP (OIS, 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; Sensor size: 1/2.55"; Pixel size: 1.4 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

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)
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, Video calling, Video sharing
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)
8 MP (Autofocus, HDR)

Video capture:

1920x1080 (Full HD)
2560x1440 (QHD) (30 fps)
2560x1440 (QHD) (30 fps)

Design

Dimensions:

6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)
5.81 x 2.70 x 0.33 inches (147.7 x 68.7 x 8.5 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)
5.75 oz (163.0 g)
6.67 oz (189.0 g)

Materials:

Back: Plastic; Frame: Plastic
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum
Back: Glass (Corning Gorilla Glass 5); Frame: Aluminum

Resistance:

Water, Dust; IP68
Water, Dust; IP68

Biometrics:

2D Face unlock, Fingerprint (touch)
Iris scanner, 2D Face unlock, Fingerprint (touch)
Iris scanner, 2D Face unlock, Fingerprint (touch)

Features:

Notification light
Notification light

Keys:

Right: Volume control, Lock/Unlock key
Left: Volume control, Other; Right: 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
Midnight black, Coral blue, Titanium gray, Lilac purple, Burgundy red, Sunrise gold, Ice blue, Polaris blue

Cellular

LTE (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)
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)

LTE (TDD):

Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46

UMTS:

Bands 1(2100), 2(1900), 5(850), 8(900)
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, 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
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
Nano SIM

Multimedia

Headphones:

3.5mm jack
3.5mm jack
3.5mm jack

Speakers:

Earpiece, Loudspeaker
Earpiece, Multiple speakers
Earpiece, Multiple speakers

Features:

Dolby Atmos
32-Bit DAC, aptX-HD
32-Bit DAC, Dolby Atmos, aptX-HD

Screen mirroring:

Wireless screen share
Wireless screen share
Wireless screen share

Radio:

FM
FM
FM

Additional microphone(s):

for Noise cancellation
for Noise cancellation

Connectivity & Features

Bluetooth:

5.0
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
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
Type-C (reversible), USB 3.1

Features:

Charging
Charging, OTG, Video out
Charging, OTG, Video out

Location:

GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou
GPS, A-GPS, Glonass, Galileo, BeiDou

Sensors:

Accelerometer, Gyroscope
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer

Other:

NFC, ANT+
NFC, ANT+

Regulatory Approval

FCC approval:

Date approved:

Jan 11, 2018
Jan 11, 2018

FCC ID value:

A3LSMG960U
A3LSMG965U

Measured SAR:

Head:

0.35 W/kg
0.36 W/kg

Body:

0.96 W/kg
0.79 W/kg

Simultaneous Transmission:

1.59 W/kg
1.59 W/kg

Wireless Router:

0.95 W/kg
1.04 W/kg

Phablet:

3.94 W/kg

Buyers information

Price:

$ 720
$ 840

In The Box:

This is the official Samsu​ng Galaxy M21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Mar 18, 2020
Feb 25, 2018
Feb 25, 2018
FCC OKs Cingular\'s purchase of AT&T Wireless