Galaxy M31 128GB - Black - Unlocked

is currently unavailable.

All devices are restored professionally based on a 25-point inspection

Buttons
SIM/memory card readerr
Data deletion
Chargers/cables
Unlocked by previous owner
GPS/positioning system
Cameras
External sensors
Biometric sensors
Wi-Fi and Bluetooth
IMEI serial number
Water damage
Flash and indicator lights
Mics and speakers
Input and output ports
Phone carrier
Battery health
Mechanical parts
Parts compatibility
Screen
Other features specific to this device

Galaxy M31 128GB - Black - Unlocked: customer reviews

12 verified reviews in the last 24 months.

P
Paul L.
Purchased on the 17 November 2023
Verified purchase
The M31 phone was delivered quicker than I expected and looks brand new, One problem is that it is set up for India so needs to be changed. I was unablle to copy tht data from my old phone to the M31 using Smart SSwitch as I kept getting the message they weren't connecting wirelessly so I've ordered a USB-C to USB-C connetor. This didn't work either so I copied the data from my old phone via a datacard. Thought the M31 phone loks and works well there was no instruction leaflet as you would get with a new phone. In fact no documentation was provided at all.
Condition
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Excellent
Item
Galaxy M31 64GB - Black - Unlocked
Reviewed in United Kingdom on 29 November 2023
M
Mika T.
Purchased on the 16 October 2023
Verified purchase
Phone physically in perfect condition, looks amazing. Software is a little iffy though, it periodically crashes and restarts and sometimes I'm not doing anything so I think it is unlikely user caused (I have left the phone on, not in an app on a desk and it has crashed) I also owned this exact model previously and I never had this issue with one I bought brand new.
Condition
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Excellent
Item
Galaxy M31 64GB - Black - Unlocked
Reviewed in United Kingdom on 30 October 2023
M
Mark G.
Purchased on the 4 March 2024
Verified purchase
Excellent battery life. Decent camera. Very satisfied with this phone, mainly because of the battery, usually lasts two full days.
Condition
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Good
Item
Galaxy M31 64GB - Red - Unlocked - Dual-SIM
Reviewed in United Kingdom on 29 August 2024
M
Michael M.
Purchased on the 20 September 2023
Verified purchase
All going well so far. The battery seems to be holding its charge as extpected. ASk me again in 6 months.
Condition
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Excellent
Item
Galaxy M31 64 GB - Ocean Blue - Unlocked
Reviewed in United Kingdom on 5 October 2023
A
Andrew B.
Purchased on the 30 July 2023
Verified purchase
Superb battery life - my husband has this phone so I knew that already. Useful having the same model but as usual full of 'clever' features that are mostly unnecessary.
Condition
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Excellent
Item
Galaxy M31 64 GB - Ocean Blue - Unlocked
Reviewed in United Kingdom on 16 August 2023
M
Mara D.
Purchased on the 3 February 2025
Verified purchase
All good the 'good' status reflects the actual aesthetics so it's not exactly perfect but it works great. and even the battery allows some breathing space compared to the S10 which leaves something to be desired.
Translated from Italian -
Condition
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Fair
Item
Galaxy M31 128GB - Nero
Reviewed in Italy on 21 February 2025
F
Frank W.
Purchased on the 10 September 2023
Verified purchase
Hello dear Backmarket team, Thank you for asking - I wanted to get in touch with you today anyway. The service is great. I does a good job. However, we found out today that the headphone jack doesn't work :-( That's really stupid. What can we do now? Thank you and best regards Frank Weberstetter
Translated from German -
Condition
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Fair
Item
Galaxy M31 64GB - Schwarz - Ohne Vertrag
Reviewed in Germany on 24 September 2023

See all 12 reviews

Reborn vs. brand new

Here’s what you help prevent on average by choosing a reborn smartphone over a brand new one.

77.3 kg of carbon

That’s like driving an old banger from London to Edinburgh and back.

6.3 oz of e-waste

That’s around the weight of a baseball.

537.1 lbs of raw materials

That's like 20 dogs digging in your yard for a week.

77,000 litres of water

That's like running a faucet for 3 days

Everything you ever wanted to know about the Galaxy M31 128GB - Black - Unlocked

Durability
Overall performance
Camera
Screen quality

BlackColour
128 GBStorage
6 GBMemory
Galaxy M31Model
AndroidOS
NoRetro tech
Super AMOLEDScreen type
USB-C + Jack 3.5mmConnector
32 megapixelsFront camera

The Galaxy M31 is a versatile smartphone that balances performance and functionality, making it suitable for a wide range of users. Launched in early 2020, it remains a reliable choice for those seeking a solid device for everyday tasks.

Key features:

Release Date: March 2020
Display: 6.4-inch Super AMOLED, FHD+ resolution
Processor: Exynos 9611
Camera: Quad-camera setup with 64MP main sensor
Connectivity: 4G LTE compatible for reliable network access.

Who is this for?

The Galaxy M31 is ideal for students, casual users, or anyone looking for a dependable smartphone for social media, browsing, and photography. It offers a good balance of features without the complexity of high-end models.

Pros & Cons:

Pros	Cons
Vibrant display with good colour reproduction.	Performance may lag with heavy multitasking.
Impressive battery life for extended usage.	Camera performance can struggle in low light.

Why refurbished?

Choosing a refurbished Galaxy M31 is an eco-conscious decision that allows you to own a reliable smartphone without the environmental impact of new production. Back Market ensures each device meets high-quality standards through rigorous testing. Learn more about our quality standards.

Galaxy M31 128GB - Black - Unlocked
Colour	Black
Storage	128 GB
Memory	6 GB
Model	Galaxy M31
OS	Android
Retro tech	No
Screen type	Super AMOLED
Connector	USB-C + Jack 3.5mm
Front camera	32 megapixels
Company name	Samsung Electronics
Camera Type	Triple (3x)
Series	Samsung Galaxy M
Company email address	support@samsung.com
Company postal address	Samsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK
SIM card	Dual Physical SIM
Main camera	64 megapixels
Colour (official name)	Space Black
SD Card Slot	microSDXC
Foldable	No
Compatible with latest Update	No
Manufacturer Ref	SM-M315F
Network	4G
Resolution	1080 x 2340
SAR head	0.48
Screen size (in)	6.4
Carrier compatibility	Unlocked
Year of Release	2020
Brand	Samsung
Weight	191 g

1-year minimum warranty
Free delivery on all items
Free 30-day returns
Excellent customer support

Galaxy M31 128GB - Black - Unlocked

All devices are restored professionally based on a 25-point inspection