Display
Size:
6.4 inches
6.5 inches
Resolution:
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
2340 x 1080 pixels, 19.5:9 ratio, 398 PPI
Technology:
Super AMOLED
OLED
Screen-to-body:
83.97 %
88.61 %
Peak brightness:
420 cd/m2 (nit)
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
HDR support, Scratch-resistant glass, Ambient light sensor, Proximity sensor
Hardware
System chip:
Exynos 9611 (10 nm)
HiSilicon Kirin 980 (7 nm)
Processor:
Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 2600 MHz, ARM Cortex-A76 and ARM Cortex-A55, 64-bit
GPU:
Mali-G72 MP3
Mali-G76 MP10
RAM:
6GB LPDDR4
8GB LPDDR4
Internal storage:
64GB (UFS 2.1), available to use: 49 GB
256GB (UFS 3.0)
Storage expansion:
microSDXC up to 512 GB
Nano Memory (NM) up to 256 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10), Samsung One UI
Android (10), Huawei Emotion UI
Battery
Capacity:
6000 mAh
4200 mAh
Type:
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging:
Fast charging
Huawei SuperCharge, Qi wireless charging, Reverse wireless charging, Reverse charging
Max charge speed:
Wired: 15.0W
Wired: 40.0W; Wireless: 15.0W
Camera
Rear:
Quad camera
Quad camera
Main camera:
64 MP (PDAF)
40 MP (OIS, PDAF)
Specifications:
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F1.6; Focal length: 27 mm; Sensor size: 1/1.7"; Pixel size: 1 μm
Second camera:
8 MP (Ultra-wide)
8 MP (Telephoto, OIS, PDAF)
Specifications:
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Optical zoom: 5.0x; Aperture size: F3.4; Focal Length: 125 mm
Third camera:
5 MP (Macro)
20 MP (Ultra-wide, PDAF)
Specifications:
Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Aperture size: F2.2; Focal Length: 16 mm; Sensor size: 1/2.7"
Fourth camera:
5 MP (Depth information)
ToF 3D depth sensing
Specifications:
Aperture size: F2.2
Flash:
LED
Dual LED
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (960 fps)
Features:
Hyperlapse, EIS
Time-lapse video, EIS
Front:
32 MP (HDR, Slow-motion videos)
32 MP (HDR)
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)
6.22 x 2.89 x 0.33 inches (158 x 73.4 x 8.41 mm)
Weight:
6.74 oz (191.0 g)
6.77 oz (192.0 g)
Materials:
Back: Plastic; Frame: Plastic
Back: Glass; Frame: Aluminum
Resistance:
Water, Dust; IP68
Biometrics:
2D Face unlock, Fingerprint (touch)
2D Face unlock, In-screen fingerprint
Keys:
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Blue, Black, Red
Black, Aurora, Silver frost
Cellular
4G (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), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 9(1800), 12(700 a), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 26(850+), 28(700 APT), 32(1500 L-band)
4G (TDD):
Bands 38(2600), 40(2300), 41(2600+)
Bands 34(2000), 38(2600), 39(1900+), 40(2300)
3G:
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
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 21 (1400/200 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
SIM type:
Nano SIM
Nano SIM
VoLTE:
Yes
Yes
Multimedia
Headphones:
3.5mm jack
No 3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features:
Dolby Atmos
32-Bit DAC, Dolby Atmos, aptX-HD
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM
Additional microphone(s):
for Noise cancellation
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 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 2.0
Type-C (reversible), USB 3.1
Features:
Charging
Charging, Headphones port
Location:
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Hall (for flip covers)
Other:
NFC
NFC, Infrared
Regulatory Approval
FCC approval:
Date approved:
Feb 07, 2020
FCC ID value:
A3LSMM315F
Measured SAR:
Head:
0.42 W/kg
Body:
0.41 W/kg
Simultaneous Transmission:
1.54 W/kg
Wireless Router:
0.74 W/kg
Buyers information
Price:
€ 240
User Manual:
This is the official Samsung Galaxy M31 User Guide in English provided from the manufacturer.
In The Box:
15W fast charger, Data cable, Ejection pin, User Manual
Availability
Officially announced:
Feb 25, 2020
May 12, 2020
FCC OKs Cingular\'s purchase of AT&T Wireless