Samsung Galaxy M21 vs Samsung Galaxy A40 - specs comparison

Display

Size:

6.4 inches

5.9 inches

Resolution:

2340 x 1080 pixels, 19.5:9 ratio, 403 PPI

2340 x 1080 pixels, 19.5:9 ratio, 437 PPI

Technology:

Super AMOLED

Screen-to-body:

84.11 %

85.73 %

Peak brightness:

420 cd/m2 (nit)

Features:

Scratch-resistant glass (Corning Gorilla Glass 3), Proximity sensor

Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Hardware

System chip:

Exynos 9611

Exynos 7904

Processor:

Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm

Octa-core, 1800 MHz, ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm

GPU:

Mali-G72 MP3

Mali-G71 MP2

RAM:

4GB LPDDR4

Internal storage:

64GB, available to use: 49 GB

64GB, available to use: 49.4 GB

Storage expansion:

microSDXC up to 512 GB

Device type:

Smartphone

OS:

Android (11, 10), Samsung One UI

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

Battery

Capacity:

6000 mAh

3100 mAh

Type:

Li - Polymer, Not user replaceable

Charging:

Fast charging

Samsung Adaptive Fast Charging

Camera

Rear:

Triple camera

Dual camera

Main camera:

48 MP (PDAF)

16 MP (PDAF)

Specifications:

F2.0; 26 mm; 1/2"; 0.8 μm

F1.7; 27 mm; 1/2.8"; 1.12 μm

Second camera:

8 MP (Ultra-wide)

5 MP (Ultra-wide)

Specifications:

Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm

Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 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)

1920x1080 (Full HD) (30 fps)

Features:

EIS

Hyperlapse, Video calling, Video sharing

Front:

20 MP (HDR)

25 MP

Video capture:

1920x1080 (Full HD)

Design

Dimensions:

6.26 x 2.96 x 0.35 inches (159.0 x 75.1 x 8.9 mm)

5.69 x 2.72 x 0.31 inches (144.4 x 69.2 x 7.9 mm)

Weight:

6.63 oz (188.0 g)

4.94 oz (140.0 g)

Materials:

Back: Plastic; Frame: Plastic

Biometrics:

2D Face unlock, Fingerprint (touch)

Keys:

Right: Volume control, Lock/Unlock key

Colors:

Midnight blue, Raven black

Black, Coral, Blue, White

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 5(850), 8(900), 2(1900), 1(2100)

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

Data Speed:

LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

LTE-A Cat 12/13 (600/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM:

Yes

SIM type:

Nano SIM

Multimedia

Headphones:

3.5mm jack

Speakers:

Earpiece, Loudspeaker

Features:

Dolby Atmos

Dolby Atmos, Album art cover, Background playback

Screen mirroring:

Wireless screen share

Radio:

FM

Additional microphone(s):

for Noise cancellation

Connectivity & Features

Bluetooth:

5.0

Wi-Fi:

802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB:

Type-C (reversible), USB 2.0

Features:

Charging

Charging, Mass storage device

Location:

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

Sensors:

Accelerometer, Gyroscope

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

Other:

NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync

Regulatory Approval

FCC approval:

Date approved:

Mar 08, 2019

FCC ID value:

A3LSMA405FN

Measured SAR:

Head:

0.51 W/kg

Body:

0.46 W/kg

Simultaneous Transmission:

1.02 W/kg

Wireless Router:

0.61 W/kg

Buyers information

In The Box:

This is the official Samsung Galaxy M21 User Guide in English provided from the manufacturer.

Availability

Officially announced:

Mar 18, 2020

Apr 10, 2019