Display
Size:
6.5 inches
6.7 inches
Resolution:
2400 x 1080 pixels, 20:9 ratio, 405 PPI
2778 x 1284 pixels, 19.5:9 ratio, 457 PPI
Technology:
Super AMOLED
OLED
Refresh rate:
120Hz
Screen-to-body:
86.06 %
87.97 %
Features:
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor
HDR support, Oleophobic coating, Scratch-resistant glass (Ceramic Shield), Ambient light sensor, Proximity sensor
Hardware
System chip:
Samsung Exynos 9611
Apple A15 Bionic
Processor:
Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm
Hexa-core, 64-bit, 5 nm
GPU:
Mali-G72 MP3
Yes
RAM:
6GB LPDDR4
6GB
Internal storage:
128GB (UFS 2.1), available to use: 106.4 GB
128GB, not expandable
Storage expansion:
microSDXC up to 512 GB
Device type:
Smartphone
Smartphone
OS:
Android (11, 10), Samsung One UI
iOS (15.x)
Battery
Capacity:
6000 mAh
4373 mAh
Type:
Not user replaceable
Li - Ion, Not user replaceable
Charging:
Fast charging, Reverse charging
USB Power Delivery, Qi wireless charging, MagSafe wireless charging
Max charge speed:
Wired: 25.0W
Wired: 20.0W; Wireless: 15.0W
Camera
Rear:
Quad camera
Triple camera
Main camera:
64 MP (PDAF)
12 MP (OIS, PDAF)
Specifications:
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm
Aperture size: F1.5; Focal length: 26 mm; Pixel size: 1.9 μm
Second camera:
12 MP (Ultra-wide)
12 MP (Telephoto, OIS, PDAF)
Specifications:
Aperture size: F2.2
Optical zoom: 3.0x; Aperture size: F2.8; Focal Length: 77 mm
Third camera:
5 MP (Macro)
12 MP (Ultra-wide, Autofocus)
Specifications:
Aperture size: F2.4
Aperture size: F1.8; Focal Length: 13 mm
Fourth camera:
5 MP (Depth information)
Specifications:
Aperture size: F2.4
Video recording:
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD) (120 fps), 1280x720 (HD) (480 fps)
3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (30 fps)
Features:
Hyperlapse, EIS
OIS, HDR, Time-lapse video, Continuous autofocus, Picture-taking during video recording, Video light
Front:
32 MP
12 MP (Time-of-Flight (ToF), EIS, HDR, Slow-motion videos)
Video capture:
3840x2160 (4K UHD) (30 fps)
3840x2160 (4K UHD) (60 fps)
Design
Dimensions:
6.27 x 2.93 x 0.37 inches (159.3 x 74.4 x 9.3 mm)
6.33 x 3.07 x 0.30 inches (160.8 x 78.1 x 7.65 mm)
Weight:
7.16 oz (203.0 g)
8.47 oz (240.0 g)
Materials:
Back: Glass; Frame: Stainless steel
Resistance:
Water, Splash, Dust; IP68
Biometrics:
Fingerprint (touch)
3D Face unlock
Keys:
Right: Volume control, Lock/Unlock key
Left: Volume control, Other; Right: Lock/Unlock key
Colors:
Mirage black, Mirage blue
Graphite, Gold, Silver, Sierra Blue
Cellular
5G:
n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n48, n66, n71, n77, n79, n258, n260, n261
LTE (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 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), 19(800 Upper), 20(800 DD), 21(1500 Upper), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 32(1500 L-band), 66(AWS-3), 71(600)
LTE (TDD):
Bands 38(2600), 40(2300), 41(2600+)
Bands 34(2000), 38(2600), 39(1900+), 40(2300), 41(2600+), 42(3500), 46, 48(3600)
UMTS:
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 6(800)
Data Speed:
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
Dual SIM:
Yes
Yes
SIM type:
Nano SIM
Nano SIM, eSIM
HD Voice:
Yes
VoLTE:
Yes
Multimedia
Headphones:
3.5mm jack
No 3.5mm jack
Speakers:
Earpiece, Loudspeaker
Earpiece, Loudspeaker
Features:
Dolby Atmos
Screen mirroring:
Wireless screen share
Wireless screen share
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 a, b, g, n, ac, ax (Wi-Fi 6), dual-band; MIMO, Wi-Fi Direct, Hotspot
USB:
Type-C (reversible), USB 2.0
Lightning
Features:
Charging, OTG
Charging, Headphones port
Location:
GPS, A-GPS, Cell ID, Wi-Fi positioning
GPS, A-GPS, Glonass, Galileo, BeiDou, QZSS, Cell ID, Wi-Fi positioning
Sensors:
Accelerometer, Gyroscope, Compass
Accelerometer, Gyroscope, Compass, Barometer, LiDAR scanner
Other:
NFC
NFC, UMA (Wi-Fi Calling)
Hearing aid compatible:
M3, T4
Regulatory Approval
FCC approval:
Date approved:
Sep 14, 2021
FCC ID value:
BCG-E4003A
Measured SAR:
Head:
0.96 W/kg
Body:
0.96 W/kg
Simultaneous Transmission:
1.45 W/kg
Wireless Router:
0.96 W/kg
Buyers information
Price:
€ 310
$ 1099
User Manual:
This is the official Samsung Galaxy M31s User Guide in English provided from the manufacturer.
In The Box:
USB‑C to Lightning Cable, Documentation
Availability
Officially announced:
Jul 30, 2020
Sep 14, 2021
Scheduled release:
(Official) Sep 24, 2021
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