Display
Size:
6.5 inches
5.7 inches
Resolution:
2400 x 1080 pixels, 20:9 ratio, 405 PPI
1520 x 720 pixels, 19:9 ratio, 295 PPI
Technology:
Super AMOLED
IPS LCD
Screen-to-body:
86.06 %
77.13 %
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
Ambient light sensor, Proximity sensor
Hardware
System chip:
Samsung Exynos 9611 (10 nm)
MediaTek Helio P22 MT6762 (12 nm)
Processor:
Octa-core, 4x 2.3GHz Cortex-A73 + 4x 1.7GHz Cortex-A53, 64-bit
Octa-core, 2000 MHz, Arm Cortex-A53, 64-bit
GPU:
Mali-G72 MP3
IMG PowerVR GE8320
RAM:
6GB LPDDR4
2GB
Internal storage:
128GB (UFS 2.1), available to use: 106.4 GB
32GB, available to use: 17 GB
Storage expansion:
microSDXC up to 512 GB
microSDXC up to 32 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10), Samsung One UI
Android (10)
Battery
Capacity:
6000 mAh
3000 mAh
Type:
Not user replaceable
Not user replaceable
Charging:
Fast charging, Reverse charging
Max charge speed:
Wired: 25.0W
Camera
Rear:
Quad camera
Dual camera
Main camera:
64 MP (PDAF)
13 MP (PDAF)
Specifications:
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F1.8; Sensor size: 1/3"; Pixel size: 1.12 μm
Second camera:
12 MP (Ultra-wide)
5 MP (Ultra-wide)
Specifications:
Aperture size: F2.2
Aperture size: F2.2; Sensor size: 1/5"; Pixel size: 1.12 μm
Third camera:
5 MP (Macro)
Specifications:
Aperture size: F2.4
Fourth camera:
5 MP (Depth information)
Specifications:
Aperture size: F2.4
Flash:
LED
LED
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (480 fps)
1920x1080 (Full HD) (30 fps)
Features:
Hyperlapse, EIS
Front:
32 MP
5 MP
Video capture:
3840x2160 (4K UHD) (30 fps)
1920x1080 (Full HD)
Design
Dimensions:
6.27 x 2.93 x 0.37 inches (159.3 x 74.4 x 9.3 mm)
5.82 x 2.8 x 0.34 inches (147.8 x 71.1 x 8.6 mm)
Weight:
7.16 oz (203.0 g)
5.15 oz (146.0 g)
Materials:
Back: Plastic; Frame: Plastic
Resistance:
Yes; MIL-STD-810 certified
Biometrics:
Fingerprint (touch)
Fingerprint (touch)
Keys:
Right: Volume control, Lock/Unlock key
Left: Volume control; Right: Lock/Unlock key
Colors:
Mirage black, Mirage blue
Silver
Cellular
4G (FDD):
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)
Bands 2(1900), 4(AWS-1), 5(850), 12(700 a), 13(700 c), 25(1900+), 26(850+), 66(AWS-3), 71(600)
4G (TDD):
Bands 38(2600), 40(2300), 41(2600+)
Bands 41(2600+)
3G:
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed:
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A Cat 7 (300/100 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
Dual SIM:
Yes
SIM type:
Nano SIM
Nano SIM
HD Voice:
Yes
Multimedia
Headphones:
3.5mm jack
3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Screen mirroring:
Wireless screen share
Wireless screen share
Radio:
FM
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
microUSB, USB 2.0
Features:
Charging, OTG
Charging
Location:
GPS, A-GPS, Cell ID, Wi-Fi positioning
GPS, A-GPS, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass
Accelerometer
Other:
NFC
UMA (Wi-Fi Calling)
Hearing aid compatible:
M3, T3
Regulatory Approval
FCC approval:
Date approved:
Sep 14, 2020
FCC ID value:
ZNFK300AM
Measured SAR:
Head:
0.47 W/kg
Body:
0.91 W/kg
Simultaneous Transmission:
1.26 W/kg
Wireless Router:
1.02 W/kg
Buyers information
Price:
€ 310
$ 150
User Manual:
This is the official Samsung Galaxy M31s User Guide in English provided from the manufacturer.
This is the official LG K31 User Guide in English provided from the manufacturer.
In The Box:
Travel Adapter, USB Cable
Availability
Officially announced:
Jul 30, 2020