Samsung Galaxy M31s

Brand and model

Brand	Samsung
Model	Galaxy M31s
Model alias	SM-M317F/DS SM-M317F SM-M315FZKDINS

Design

Width	75.1 mm 7.51 cm 0.246 ft 2.957 in
Height	159.2 mm 15.92 cm 0.522 ft 6.268 in
Thickness	9.3 mm 0.93 cm 0.031 ft 0.366 in
Weight	191 g 0.42 lbs 6.74 oz
Volume	111.19 cm³ 6.75 in³
Colors	Mirage Black Mirage Blue
Body materials	Plastic

SIM card

SIM card type	Nano-SIM (4FF — fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)
Number of SIM cards	2
Features	Dual SIM stand-by (Both cards are active. When one is busy, the other is not active)

Networks

GSM	GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz
UMTS	UMTS 850 MHz UMTS 900 MHz UMTS 1900 MHz UMTS 2100 MHz
LTE	LTE 850 MHz LTE 900 MHz LTE 1800 MHz LTE 2100 MHz LTE 2600 MHz

Mobile network technologies and bandwidth

Mobile network technologies

UMTS (384 kbit/s ) EDGE GPRS HSPA+ (HSUPA 5.76 Mbit/s , HSDPA 42 Mbit/s ) LTE Cat 10 (102.0 Mbit/s , 452.2 Mbit/s )

Operating system

Operating system (OS)	Android 10
User interface (UI)	One UI 2.0

System on Chip (SoC)

SoC	Samsung Exynos 7 Octa 9611
Process technology	10 nm
CPU	4x 2.3 GHz ARM Cortex-A73, 4x 1.7 GHz ARM Cortex-A53
CPU bits	64 bit
Instruction set	ARMv8-A
CPU cores	8
CPU frequency	2300 MHz
GPU	ARM Mali-G72 MP3
GPU cores	3
RAM capacity	6 GB 8 GB
RAM type	LPDDR4X
RAM channels	Double channel

Storage

Storage	64 GB 128 GB
	eMMC 5.1

Memory cards

Types

microSD microSDHC microSDXC

Display

Type/technology	Super AMOLED
Diagonal size	6.5 in 165.1 mm 16.51 cm
Width	2.72 in 69.19 mm 6.92 cm
Height	5.9 in 149.9 mm 14.99 cm
Aspect ratio	2.167:1
Resolution	1080 x 2340 pixels
Pixel density	396 ppi 155 ppcm
Color depth	24 bit 16777216 colors
Display area	87.03 %
Other features	Capacitive Multi-touch
	2.5D curved glass screen Corning Gorilla Glass 3 Infinity-O Display 420 cd/m² peak brightness 78960:1 dynamic contrast ratio Widevine L1 certification for HD streaming

Sensors

Sensors

Proximity Accelerometer Compass Gyroscope Geomagnetic Fingerprint Virtual Light Sensor

Rear camera

Sensor model	Samsung S5KGW1
Sensor type	ISOCELL
Sensor format	1/1.72″
Pixel size	0.8 µm (micrometers) 0.000800 mm
ISO	100 — 800
Aperture	f/1.8
Focal length and 35 mm equivalent	3.58 mm 27 mm *(35 mm / full frame)
Flash type	LED
Image resolution	9280 x 6944 pixels 64.44 MP
Video resolution	3840 x 2160 pixels 8.29 MP
Video FPS	30 fps
Features	Autofocus Continuous shooting Digital zoom Geotagging Panorama HDR Touch focus Face detection White balance settings ISO settings Exposure compensation Self-timer Scene mode Phase detection autofocus (PDAF)
	Pixel size — 1.6 μm (4-in-1 pixel binning) Sensor type — ISOCELL PLUS Super Phase Detection 8x digital zoom Secondary rear camera — 8 MP (ultra-wide angle) Aperture size — f/2.2 (#2) Third rear camera — 5 MP (depth-sensing) Aperture size — f/2.2 (#3) Fourth rear camera — 5 MP (macro) Aperture size — f/2.2 (#4)

Front camera

Sensor model	Sony IMX616
Sensor type	CMOS BSI (backside illumination)
Sensor format	1/2.8″
Pixel size	0.8 µm (micrometers) 0.000800 mm
Aperture	f/2
Image resolution	6528 x 4896 pixels 31.96 MP
Video resolution	3840 x 2160 pixels 8.29 MP
Video FPS	30 fps
Features	Face unlock

Audio

Speaker	Loudspeaker Earpiece
	Dolby Atmos

Radio

Radio

Yes

Tracking / Positioning

Tracking / Positioning

GPS A-GPS GLONASS BeiDou Galileo

Wi-Fi

Wi-Fi

802.11a (IEEE 802.11a-1999) 802.11b (IEEE 802.11b-1999) 802.11g (IEEE 802.11g-2003) 802.11n (IEEE 802.11n-2009) 802.11n 5GHz 802.11ac (IEEE 802.11ac) Dual band Wi-Fi Hotspot Wi-Fi Direct

Bluetooth

Version	5.0
Features	A2DP (Advanced Audio Distribution Profile) AVRCP (Audio/Visual Remote Control Profile) DIP (Device ID Profile) HFP (Hands-Free Profile) HID (Human Interface Profile) HSP (Headset Profile) MAP (Message Access Profile) OPP (Object Push Profile) PAN (Personal Area Networking Profile) PBAP/PAB (Phone Book Access Profile) HOGP

USB

Connector type	USB Type-C
Version	2.0
Features	Charging Mass storage On-The-Go

Headphone jack

Headphone jack

Yes

Connectivity

Connectivity

Computer sync OTA sync Tethering

Browser

Browser

HTML HTML5 CSS 3

Audio file formats/codecs

Audio file formats/codecs

AAC (Advanced Audio Coding) AMR / AMR-NB / GSM-AMR (Adaptive Multi-Rate, .amr, .3ga) AMR-WB (Adaptive Multi-Rate Wideband, .awb) eAAC+ / aacPlus v2 / HE-AAC v2 FLAC (Free Lossless Audio Codec, .flac) M4A (MPEG-4 Audio, .m4a) MIDI MP3 (MPEG-2 Audio Layer II, .mp3) OGG (.ogg, .ogv, .oga, .ogx, .spx, .opus) WMA (Windows Media Audio, .wma) WAV (Waveform Audio File Format, .wav, .wave)

Video file formats/codecs

Video file formats/codecs

3GPP (3rd Generation Partnership Project, .3gp) 3GPP2 (3rd Generation Partnership Project 2, .3g2) AVI (Audio Video Interleaved, .avi) Flash Video (.flv, .f4v, .f4p, .f4a, .f4b) H.263 H.264 / MPEG-4 Part 10 / AVC video H.265 / MPEG-H Part 2 / HEVC MKV (Matroska Multimedia Container, .mkv .mk3d .mka .mks) MP4 (MPEG-4 Part 14, .mp4, .m4a, .m4p, .m4b, .m4r, .m4v) VC-1 VP8 VP9 WebM WMV (Windows Media Video, .wmv) WMV7 (Windows Media Video 7, .wmv) WMV8 (Windows Media Video 8, .wmv) Xvid

Battery

Capacity	6000 mAh
Type	Li-Ion
4G talk time	51 h 3060 min 2.1 days
Features	Fast charging Non-removable
	25W fast charging