Samsung Galaxy M31

Name: Samsung Galaxy M31
Brand: Samsung
SKU: samsung-galaxy-m31

Price:৳21,500

Regular Price:৳23,000

Status:Available

Product Code:samsung-galaxy-m31

Brand:Samsung

Made By:Samsung

Options / Variants:

Key Specifications

See Full Specs ›

Android 10

Storage64GB / 128GB

RAM6GB

Main Camera64+8+5+5MP

Front Camera32MP

Display6.4" Super AMOLED, 60Hz

Battery6000mAh

Specification Description Questions (0)Reviews (0)Basic Information Hardware & Software Display Cameras Selfie Camera Design Battery Memory Network & Connectivity Sensors & Security Multimedia More

Specification

Samsung Galaxy M31 Specifications

Basic Information
Release Date	5 Mar 2020
Status	Available
Hardware & Software
CPU	Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU	Mali-G72 MP3
Chipset	Exynos 9611 (10 nm)
CPU Cores	8 Cores (Octa-core)
OS Version	Android 10, upgradable to Android 12
Fabrication	10 nm
Architecture	64-bit
User Interface	One UI 4.1 Core
Operating System	Android
Display
Notch	Waterdrop / U-shaped notch
Features	Always-on display, Super AMOLED rich contrast, Widevine L1 certified
Brightness	420 nits (typical)
Resolution	1080 x 2340 pixels (Full HD+)
HDR Support	No
Screen Size	6.4 inches (16.21 cm, ~100.5 cm2)
Aspect Ratio	19.5:9 ratio
Display Type	Super AMOLED, 16M Colors
Refresh Rate	60Hz
Touch Screen	Capacitive Touchscreen, Multi-touch
Pixel Density	~403 ppi density
Screen Protection	Corning Gorilla Glass 3
Bezel-less Display	Yes, with Infinity-U notch display
Screen to Body Ratio	~84.1%
Cameras
OIS	No
Zoom	Up to 8x Digital Zoom
Flash	LED Flash
Sensor	1/1.72" Primary Sensor (ISOCELL Bright GW1, 0.8µm pixel size), 1/4.0" Ultrawide, Dedicated Macro & Depth
Aperture	f/1.8 (Wide) + f/2.2 (Ultrawide) + f/2.4 (Macro) + f/2.2 (Depth)
Settings	ISO Control, Exposure Compensation, White Balance, Pro Mode
Autofocus	PDAF (Phase Detection Auto Focus)
Video FPS	30fps
Resolution	64 MP (f/1.8, 26mm wide) + 8 MP (f/2.2, 123˚ ultrawide) + 5 MP (f/2.4, macro) + 5 MP (f/2.2, depth)
Camera Setup	Quad Camera Setup
Shooting Modes	Super Steady Video, Night Mode, Live Focus, Super Slow-mo, Hyperlapse, Macro Mode, Pro, Panorama
Camera Features	Tetracell 4-in-1 pixel binning, Live Focus Portrait, Scene Optimizer, Auto-HDR
Video Recording	4K UHD @ 30fps, 1080p FHD @ 30fps, gyro-EIS
Image Resolution	9000 x 7000 Pixels
Selfie Camera
OIS	No
Sensor	1/2.8" Sensor Size, 0.8µm pixel size (Tetracell 4-in-1)
Aperture	f/2.0 (26mm wide)
Autofocus	No (Fixed Focus)
Video FPS	30fps
Resolution	32 MP
Camera Setup	Single Camera Setup
Camera Features	HDR, Screen Flash, Live Focus Selfie, Slow-mo Selfie
Video Recording	4K UHD @ 30fps, 1080p FHD @ 30fps
Design
Build	Corning Gorilla Glass 3 front, Glossy polycarbonate (Glasstic) back, Plastic frame
Width	75.1 mm
Colors	Ocean Blue, Space Black, Red
Height	159.2 mm
Weight	191 grams
IP Rating	No IP Rating
Thickness	8.9 mm
Ruggedness	Standard build
Waterproof	No official IP rating
Battery
Capacity	6000 mAh
Placement	Built-in / Integrated
USB Type-C	Yes, Type-C 2.0
Battery Type	Non-removable Li-Po
Quick Charging	Fast Charging 15W
Reverse Charging	Yes, Wired Reverse Charging support via Type-C
Wireless Charging	No
Memory
RAM	6 GB / 8 GB
USB OTG	Yes, Supported
RAM Type	LPDDR4X
Storage Type	UFS 2.1
Internal Storage	64 GB / 128 GB
Network & Connectivity
GPS	Yes, with A-GPS, GLONASS, BDS, GALILEO
NFC	No (Market dependent)
USB	USB Type-C 2.0, USB On-The-Go
EDGE	Yes, Available
GPRS	Yes, Available
WLAN	Wi-Fi 802.11 a/b/g/n/ac, Dual-band, Wi-Fi Direct, Hotspot
Speed	HSPA 42.2/5.76 Mbps, LTE-A
VoLTE	Yes, Dual VoLTE Supported
Network	4G LTE, 3G HSPA, 2G GSM
Infrared	No
SIM Size	Nano-SIM
SIM Slot	Dual SIM (Nano-SIM, dual stand-by) + Dedicated microSD slot
Bluetooth	v5.0, A2DP, LE
SAR Value	0.38 W/kg (head), 1.54 W/kg (body)
Wi-Fi Hotspot	Yes
Sensors & Security
Compass	Yes, Digital Geomagnetic Compass
Gyroscope	Yes
Face Unlock	Yes, 2D Face Recognition
Light Sensor	Yes, Virtual Light Sensing
Accelerometer	Yes
Proximity Sensor	Yes, Virtual Proximity Sensing
Finger Sensor Type	Capacitive Physical Fingerprint Scanner
Fingerprint Sensor	Yes
Finger Sensor Position	Rear-mounted
Multimedia
Video	4K UHD video playback, MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM
Audio Jack	Yes, 3.5mm Headphone Jack included
Loudspeaker	Yes, Bottom-firing Loudspeaker
Audio Features	Dolby Atmos audio enhancement (headphone mode only), FM Radio with recording
More
Made By	South Korea / Vietnam / India
Features	Dedicated triple slot (2 SIM + 1 microSD up to 512GB), Wired reverse charging, Widevine L1 HD streaming support

The Samsung Galaxy M31 earned legendary status in the mid-range segment as the ultimate battery powerhouse. At its heart is an enormous 6000 mAh battery built for power users, media enthusiasts, and travelers, capable of delivering up to two full days of uninterrupted screen time, complete with 15W charging and wired reverse charging capabilities. Visuals are powered by a vibrant 6.4-inch Full HD+ Super AMOLED Infinity-U display protected by Corning Gorilla Glass 3, delivering punchy colors, deep blacks, and Widevine L1 support for HD streaming on Netflix and YouTube. Powered by the Exynos 9611 octa-core processor with up to 8GB of LPDDR4X RAM and 128GB of UFS 2.1 storage, it handles day-to-day multitasking smoothly. The device stands out with its versatile 64MP quad rear camera array (64MP primary + 8MP ultrawide + 5MP macro + 5MP depth) along with a high-resolution 32MP front selfie shooter, both capable of shooting crisp 4K videos. Finished with a physical rear fingerprint scanner, 3.5mm headphone jack with Dolby Atmos, and a dedicated triple card slot, the Galaxy M31 remains one of the best battery-focused smartphones in Bangladesh.

Pros

Massive 6000 mAh battery providing up to 2 full days of heavy battery life with reverse charging support
Stunning 6.4-inch Full HD+ Super AMOLED display with deep blacks and vibrant colors
Versatile 64MP quad rear camera setup with 4K recording support on both rear and front cameras
Dedicated triple card slot supporting two Nano-SIMs and one microSD card up to 512GB
Retains the 3.5mm audio headphone jack and includes Dolby Atmos support

Cons

15W fast charging takes over 2.5 hours to fully charge the gigantic 6000 mAh battery
Exynos 9611 chipset tends to drop frames and heat up during prolonged competitive gaming
Glossy plastic (Glasstic) back panel scratches easily and attracts fingerprints
Display is standard 60Hz without high-refresh-rate smoothness

Frequently Asked Questions

What is the official and unofficial price of Samsung Galaxy M31 in Bangladesh?

The official launched price of the Samsung Galaxy M31 (6GB/128GB) in Bangladesh was BDT 23,999, while the 6GB/64GB variant was launched at BDT 21,500. In the current unofficial/secondary market, the 128GB variant is widely available around BDT 19,500 to BDT 20,500.

How long does the 6000 mAh battery last on the Samsung Galaxy M31?

Under moderate to heavy daily usage (browsing, video streaming, and social apps), the 6000 mAh battery easily lasts 1.5 to 2 days on a single charge with around 9 to 11 hours of Screen-on-Time (SoT).

Can I record 4K videos with the front selfie camera on Galaxy M31?

Yes, both the 64MP rear main camera and the 32MP front selfie camera support 4K UHD video recording at 30fps.

Does Samsung Galaxy M31 have a dedicated microSD card slot?

Yes, it features a dedicated triple card slot allowing you to use two Nano-SIM cards and one microSD card simultaneously up to 512GB.

Does Samsung Galaxy M31 support reverse charging?

Yes, the Galaxy M31 supports wired reverse charging via a USB Type-C to Type-C cable, allowing you to use its massive 6000 mAh battery as a power bank to charge other phones or accessories.