Display
Size:
5.8 inches
6.4 inches
Resolution:
2340 x 1080 pixels, 19.5:9 ratio, 444 PPI
2340 x 1080 pixels, 19.5:9 ratio, 403 PPI
Technology:
OLED
Super AMOLED
Screen-to-body:
82.53 %
83.97 %
Peak brightness:
420 cd/m2 (nit)
Features:
HDR video support, Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Hardware
System chip:
Qualcomm Snapdragon 730 SM7150-AA
Exynos 9611
Processor:
Octa-core, 2200 MHz, Kryo 470, 64-bit, 8 nm
Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm
GPU:
Adreno 618
Mali-G72 MP3
RAM:
6GB LPDDR4
6GB LPDDR4
Internal storage:
128GB, not expandable
64GB (UFS 2.1), available to use: 49 GB
Storage expansion:
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10)
Android (10), Samsung One UI
Battery
Capacity:
3140 mAh
6000 mAh
Type:
Li - Polymer, Not user replaceable
Li - Polymer, Not user replaceable
Charging:
USB Power Delivery
Fast charging
Max charge speed:
Wired: 18.0W
Wired: 15.0W
Camera
Rear:
Single camera
Quad camera
Main camera:
12.2 MP (OIS, PDAF)
64 MP (PDAF)
Specifications:
Aperture size: F1.7; Focal length: 27 mm; Sensor size: 1/2.55"; Pixel size: 1.4 μm
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Second camera:
8 MP (Ultra-wide)
Specifications:
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm
Third camera:
5 MP (Macro)
Specifications:
Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm
Fourth camera:
5 MP (Depth information)
Specifications:
Aperture size: F2.2
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (240 fps)
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)
Features:
EIS
Hyperlapse, EIS
Front:
8 MP
32 MP (HDR, Slow-motion videos)
Video capture:
1920x1080 (Full HD)
1920x1080 (Full HD)
Design
Dimensions:
5.67 x 2.73 x 0.32 inches (144 x 69.4 x 8.2 mm)
6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)
Weight:
5.04 oz (143.0 g)
6.74 oz (191.0 g)
Materials:
Back: Plastic; Frame: Plastic
Back: Plastic; Frame: Plastic
Biometrics:
Fingerprint (touch)
2D Face unlock, Fingerprint (touch)
Keys:
Right: Volume control, Lock/Unlock key
Right: Volume control, Lock/Unlock key
Colors:
Just black
Blue, Black, 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), 14(700 PS), 17(700 b), 18(800 Lower), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3), 71(600)
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)
LTE (TDD):
Bands 38(2600), 39(1900+), 40(2300), 41(2600+)
Bands 38(2600), 40(2300), 41(2600+)
UMTS:
850, 900, 1700/2100, 1900, 2100 MHz
850, 900, 1700/2100, 1900, 2100 MHz
Data Speed:
LTE-A Cat 11 (600/75 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
Yes
SIM type:
Nano SIM, eSIM
Nano SIM
VoLTE:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Multiple speakers
Earpiece, Loudspeaker
Features:
aptX, aptX-HD
Dolby Atmos
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM
Additional microphone(s):
for Noise cancellation
for Noise cancellation
Connectivity & Features
Bluetooth:
5.1
5.0
Wi-Fi:
802.11 a, b, g, n, ac, dual-band; MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 3.1
Type-C (reversible), USB 2.0
Features:
Charging
Charging
Location:
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass, Barometer
Accelerometer, Gyroscope, Compass
Other:
NFC
NFC
Hearing aid compatible:
M3, T4
Regulatory Approval
Measured SAR:
Head:
1.18 W/kg
0.42 W/kg
Body:
1.19 W/kg
0.41 W/kg
Simultaneous Transmission:
1.59 W/kg
1.54 W/kg
Wireless Router:
1.00 W/kg
0.74 W/kg
Buyers information
Price:
$ 349
€ 240
User Manual:
This is the official Samsung Galaxy M31 User Guide in English provided from the manufacturer.
In The Box:
18W USB-C power adapter, 1 m USB-C to USB-C cable (USB 2.0), Quick Start Guide, Quick Switch Adapter, SIM tool
15W fast charger, Data cable, Ejection pin, User Manual
Availability
Officially announced:
Aug 03, 2020
Feb 25, 2020
