Samsung Galaxy A40 vs Samsung Galaxy M21
Compare phone and tablet specifications of up to three devices. Type a model name in the search field of our phone comparison tool or pick a popular device from the ones below.
Display
Size
Resolution
Technology
Super AMOLED
Super AMOLED
Screen-to-body
85.73 %
84.11 %
Features
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Proximity sensor
Hardware & Performance
System chip
Exynos 7904
Exynos 9611
Processor
GPU
Mali-G71 MP2
Mali-G72 MP3
RAM
Internal storage
64GB
64GB
Storage expansion
microSDXC up to 512 GB
microSDXC up to 512 GB
OS
Android (10, 9.0 Pie), Samsung One UI
Android (10), Samsung One UI
Battery
Capacity
3100 mAh
6000 mAh
Type
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging
Samsung Adaptive Fast Charging
Fast charging
Camera
Rear
Dual camera
Triple camera
Main camera
Specifications
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.8"; Pixel size: 1.12 μm
Aperture size: F2.0; Focal length: 26 mm; Sensor size: 1/2"; Pixel size: 0.8 μm
Second camera
5 MP (Ultra-wide)
8 MP (Ultra-wide)
Specifications
Aperture size: F2.2; Focal Length: 13 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Third camera
5 MP (Depth information)
Specifications
Aperture size: F2.2
Video recording
1920x1080 (Full HD) (30 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
Features
Hyperlapse, Video calling, Video sharing
EIS
Front
25 MP
20 MP (HDR)
Design
Dimensions
Weight
the average is 6.5 oz (184 g)
the average is 6.5 oz (184 g)
Materials
Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic
Biometrics
2D Face unlock, Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Colors
Black, Coral, Blue, White
Midnight blue, Raven black
Cellular
LTE (FDD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD)
LTE (TDD)
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
UMTS
850, 900, 1900, 2100 MHz
850, 900, 1900, 2100 MHz
Data Speed
Dual SIM
Yes
Yes
SIM type
Nano SIM
Nano SIM
Multimedia
Headphones
3.5mm jack
3.5mm jack
Features
Dolby Atmos, Album art cover, Background playback
Dolby Atmos
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; Wi-Fi Direct, Hotspot
USB
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features
Charging, Mass storage device
Charging
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Accelerometer, Gyroscope
Other
NFC, ANT+, VoIP, Tethering, Computer sync, OTA sync
