Galaxy M31Blue • 128 GB • Dual Physical SIM

Name: Galaxy M31 128GB - Blue - Unlocked
Brand: Samsung
Price: 158.00 EUR
Availability: InStock
Rating: 4.18 (40 reviews)

(40 reviews)

€158.00

Save €121.00

Free delivery by 4 - 5 Aug

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy M31

Overall rating

40 verified reviews

Rating details

Accessories
3.9/5
Appearance
4.4/5
Battery
4.2/5
Lens & Camera
4.3/5
Overall performance
4.1/5
Packaging
4.3/5
Shipping
4.5/5

Reviews

Mara D.
Verified purchase
Reviewed 21/02/2025, Italy.
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
Galaxy M31 128GB - Nero
Galaxy M31 128GB - Nero
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
03/02/2025
Mika T.
Verified purchase
Reviewed 30/10/2023, United Kingdom.
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.
Galaxy M31 64GB - Black - Unlocked
Galaxy M31 64GB - Black - Unlocked
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
16/10/2023
Paul L.
Verified purchase
Reviewed 29/11/2023, United Kingdom.
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.
Galaxy M31 64GB - Black - Unlocked
Galaxy M31 64GB - Black - Unlocked
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
17/11/2023
Frank W.
Verified purchase
Reviewed 24/09/2023, Germany.
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
Galaxy M31 64GB - Schwarz - Ohne Vertrag
Galaxy M31 64GB - Schwarz - Ohne Vertrag
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
10/09/2023
Mark G.
Verified purchase
Reviewed 29/08/2024, United Kingdom.
Excellent battery life. Decent camera. Very satisfied with this phone, mainly because of the battery, usually lasts two full days.
Galaxy M31 64GB - Red - Unlocked
Galaxy M31 64GB - Red - Unlocked
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
04/03/2024
Rubén R.
Verified purchase
Reviewed 28/12/2023, Spain.
The phone is in good condition, works perfectly for the moment, good battery life... I am happy with it. I wish the phone had come with a charger. This model, bought new, came with a charger. The price seems to me high for a second hand phone.
Translated from Spanish
Galaxy M31 64GB - Negro - Libre
Galaxy M31 64GB - Negro - Libre
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
26/11/2023
Andrew B.
Verified purchase
Reviewed 16/08/2023, United Kingdom.
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.
Galaxy M31 64GB - Blue - Unlocked
Galaxy M31 64GB - Blue - Unlocked
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
30/07/2023

Everything you ever wanted to know about the Galaxy M31

Durability
Overall performance
Camera
Screen quality

UnlockedCarrier compatibility
6 GBMemory (GB)
AndroidOS
2020Year of Release
USB-C + Jack 3.5mmConnector
4GNetwork
Dual Physical SIMSIM card
SamsungBrand
NoFoldable

The Samsung Galaxy M31 is a reliable smartphone that offers a balanced combination of performance and features. Launched in March 2020, this device remains relevant thanks to its solid specifications and user-friendly design.

Key features:

Display: 6.4-inch Super AMOLED, FHD+ resolution
Processor: Exynos 9611
Camera: Quad-camera setup with a 64MP main sensor
Storage: 128GB internal storage with expandable memory via microSD
Connectivity: 4G LTE compatible, providing reliable mobile data access.

Who is this for?

The Samsung Galaxy M31 is ideal for users looking for a dependable smartphone for everyday tasks, such as social media, browsing, and photography. It's a suitable choice for students or professionals who need a capable device without the latest flagship price tag.

Pros & Cons: Pros Cons Vibrant Super AMOLED display for an immersive viewing experience. Performance may lag during intensive multitasking. Versatile quad-camera system for various photography needs. Not water-resistant, limiting outdoor usability in rain.
Why refurbished?

Choosing a refurbished Samsung Galaxy M31 allows you to enjoy a feature-rich smartphone while being eco-conscious. Back Market ensures that all refurbished devices undergo stringent quality checks to meet high standards. Learn more about our quality standards.

Carrier compatibility: Unlocked
Memory (GB): 6 GB
OS: Android
Year of Release: 2020
Connector: USB-C + Jack 3.5mm
Network: 4G
SIM card: Dual Physical SIM
Brand: Samsung
Foldable: No
Camera Type: Triple (3x)
Screen size (in): 6.4
Depth: 0,89 cm
Color (official name): Ocean Blue
SAR body: 1,127
Height: 15,92 cm
Width: 7,51 cm
Screen type: Super AMOLED
Main camera: 64 megapixels
Front camera: 32 megapixels
SAR head: 0,482
Storage: 128 GB
Manufacturer Ref: SM-M315F/DS
SAR body part: 2,6
Model: Galaxy M31
SD Card Slot: microSDXC
Resolution: 1080 x 2340
Colour: Blue
Compatible with latest Update: No
Serie: Samsung Galaxy M
Weight: 191 g

Choose location

Suggested searches

Popular searches

Galaxy M31Blue • 128 GB • Dual Physical SIM

Galaxy M31Blue • 128 GB • Dual Physical SIM

Restored professionally

Comes with

Often bought together

Customer reviews for Galaxy M31

Overall rating

Rating details

Reviews

Reviews

Mara D.

Mika T.

Paul L.

Frank W.

Mark G.

Rubén R.

Andrew B.

Popular searches

Everything you ever wanted to know about the Galaxy M31

Durability

Overall performance

Camera

Screen quality

Related articles

Is the Samsung S9 still a good phone to buy? | Back Market

Samsung Galaxy S23 review: display, design, performance and camera specs | Back Market

Samsung Galaxy S22: Price, Release Date and Technical Specifications | Back Market

The best Samsung phone in 2025 | Back Market

Our review of the Samsung Galaxy A71 | Back Market

Samsung S10e review – Retro Cool or Just Old? | Back Market

Samsung Galaxy Tab S9 series first look review: which one should you get? | Back Market

Welcome to Back Market