Specifications

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General Information
Model nameGalaxy M31
Model typeBar
ColorsBlack (Black)
Blue (Blue)
Red (Red)
Announced2020, February
Released2020, March
Physical specifications
DimensionsBar: 159.2 x 75.1 x 8.9 mm
Weights191g
Operating system
Operating systemAndroid 10
One UI version2.5
Networks
SIMDual SIM model
SIM card sizesNano-SIM (4FF)
Networks2G
3G
4G
eSIM supportNo
Display
KindMain Display
NameInfinity-U Display
TechnologySuper AMOLED Display
Size6.4 inch / 162.56 mm
ResolutionFHD+ / 2340x1080 pixels
Pixel density411 PPI
Screen to body ratio~80.9%
Processors
Related model number(s)SM-M315F
ChipsetExynos 9611
Clock SpeedQuad-Core @ 2.30 GHz
Quad-Core @ 1.70 GHz
CoresOcta-Core
GPUMali-G72 MP3
Memory
RAM/ROM sizes6 GB RAM with 64 GB ROM

6 GB RAM with 128 GB ROM
External memory supportYes
External memory support maximum512 GB
Front Camera
FlashNo
KindSelfie Camera
Megapixels32MP
ApertureF2.0
Pixel size0.8µm
Rear Camera
FlashYes
Digital zoomYes: 0.5 - 8
KindWide-angle Camera
Megapixels64MP
ApertureF1.8
Pixel size0.8µm
ExtrasPDAF
KindUltra Wide Camera
Megapixels8MP
ApertureF2.2
Pixel size1.12μm
Field of view123˚
KindMacro Camera
Megapixels5MP
ApertureF2.4
Pixel size1.12μm
KindDepth Camera
Megapixels5MP
ApertureF2.2
Sensors
AccelerometerYes
Fingerprint sensorYes
Gyro sensorYes
Geomagnetic sensorYes
Light SensorYes
Virtual Proximity SensingYes
Video
Max. Video Recording Resolution4K UHD video recording at 30 fps (3840x2160)
External memory supportYes
External memory support maximum512 GB
Connectivity
ANT+No
USB versionType C
3.5mm HeadphonejackYes
Location technologyBeiDou
GPS
Glonass
Galileo
Wi-FiYes
Wi-Fi DirectYes
NFCNo
Bluetooth Version5.0
Battery
Standard battery capacity6000mAh
Removable batteryNo
Wired fast chargingYes
Wired fast charging watt15