Display
Size:
6.4 inches
6.5 inches
Resolution:
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
1600 x 720 pixels, 20:9 ratio, 270 PPI
Technology:
Super AMOLED
LCD
Screen-to-body:
83.97 %
85.80 %
Peak brightness:
420 cd/m2 (nit)
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip:
Exynos 9611 (10 nm)
Mediatek Helio P35 MT6765 (12 nm)
Processor:
Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 4x 2.3GHz Cortex-A53 + 4x 1.8GHz Cortex-A53, 64-bit
GPU:
Mali-G72 MP3
PowerVR GE8320
RAM:
6GB LPDDR4
4GB LPDDR4
Internal storage:
64GB (UFS 2.1), available to use: 49 GB
64GB (eMMC 5.1), available to use: 48.2 GB
Storage expansion:
microSDXC up to 512 GB
microSDXC up to 1024 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10), Samsung One UI
Android (10), Samsung One UI UI
Battery
Capacity:
6000 mAh
5000 mAh
Type:
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging:
Fast charging
Samsung Adaptive Fast Charging
Max charge speed:
Wired: 15.0W
Wired: 15.0W
Camera
Rear:
Quad camera
Quad camera
Main camera:
64 MP (PDAF)
48 MP (Autofocus)
Specifications:
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F2.0; Focal length: 26 mm
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
Third camera:
5 MP (Macro)
2 MP (Macro)
Specifications:
Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.4
Fourth camera:
5 MP (Depth information)
2 MP (Depth information)
Specifications:
Aperture size: F2.2
Aperture size: F2.4
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
1920x1080 (Full HD) (30 fps)
Features:
Hyperlapse, EIS
Front:
32 MP (HDR, Slow-motion videos)
8 MP
Video capture:
1920x1080 (Full HD)
Design
Dimensions:
6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)
6.46 x 2.98 x 0.35 inches (164 x 75.8 x 8.9 mm)
Weight:
6.74 oz (191.0 g)
7.23 oz (205.0 g)
Materials:
Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic
Biometrics:
2D Face unlock, Fingerprint (touch)
Fingerprint (touch)
Keys:
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Blue, Black, Red
Black, White, Blue, Red
Cellular
LTE (FDD):
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)
Bands 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800 DD), 28(700 APT)
LTE (TDD):
Bands 38(2600), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
UMTS:
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 5(850), 8(900)
Data Speed:
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
Yes
SIM type:
Nano SIM
Nano SIM
VoLTE:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features:
Dolby Atmos
Screen mirroring:
Wireless screen share
Wireless screen share, MirrorLink
Radio:
FM
Additional microphone(s):
for Noise cancellation
Connectivity & Features
Bluetooth:
5.0
5.0
Wi-Fi:
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
802.11 b, g, n; Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 2.0
Type-C (reversible), USB 2.0
Features:
Charging
Charging, Mass storage device
Location:
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass
Accelerometer
Other:
NFC
NFC
Regulatory Approval
FCC approval:
Date approved:
Feb 07, 2020
Mar 11, 2021
FCC ID value:
A3LSMM315F
A3LSMA125U
Measured SAR:
Head:
0.42 W/kg
1.14 W/kg
Body:
0.41 W/kg
1.20 W/kg
Simultaneous Transmission:
1.54 W/kg
1.59 W/kg
Wireless Router:
0.74 W/kg
1.34 W/kg
Buyers information
Price:
€ 240
€ 179
User Manual:
This is the official Samsung Galaxy M31 User Guide in English provided from the manufacturer.
This is the official Samsung Galaxy A12 User Guide in English provided from the manufacturer.
In The Box:
15W fast charger, Data cable, Ejection pin, User Manual
Power brick, USB cable, Headphones, Sim card extraction tool
Availability
Officially announced:
Feb 25, 2020
Nov 24, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless