Darn, it's out of stock
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Galaxy M31 64GB - Blue - Unlocked

Galaxy M31 64GB - Blue - 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 64GB - Blue - 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.

    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.

    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.

    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.

    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.

    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

    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

    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 64GB - Blue - Unlocked


  • Durability

  • Overall performance

  • Camera

  • Screen quality

  • BlueColour

  • 64 GBStorage

  • 6 GBMemory

  • Galaxy M31Model

  • AndroidOS

  • NoRetro tech

  • Super AMOLEDScreen type

  • USB-C + Jack 3.5mmConnector

  • 32 megapixelsFront camera

The Samsung Galaxy M31 is a versatile smartphone that provides a solid balance of performance and features. Launched in February 2020, it remains a reliable choice for users looking for a dependable device for everyday tasks.

Key features:
  • Display: 6.4-inch Super AMOLED, FHD+ resolution
  • Processor: Exynos 9611
  • Camera: Quad-camera setup with 64MP main sensor
  • Operating System: Ships with Android 10, upgradable to newer versions
  • Connectivity: Dual SIM capability and 4G LTE support
Who is this for?

The Samsung Galaxy M31 is ideal for students, casual users, and those who enjoy photography without needing the latest flagship features. Its large display and robust camera system make it suitable for media consumption and social media sharing.

Pros & Cons:
Pros Cons
Large and vibrant display for an immersive viewing experience. Performance may lag with heavy multitasking.
Versatile camera system for various photography needs. Plastic build may not feel as premium as other models.

Why refurbished?

Choosing a refurbished Samsung Galaxy M31 allows you to enjoy a quality smartphone while being environmentally conscious. Each device is rigorously tested to ensure it meets Back Market's high standards for quality and reliability. Learn more about our quality standards.

Galaxy M31 64GB - Blue - Unlocked
ColourBlue
Storage64 GB
Memory6 GB
ModelGalaxy M31
OSAndroid
Retro techNo
Screen typeSuper AMOLED
ConnectorUSB-C + Jack 3.5mm
Front camera32 megapixels
Company nameSamsung Electronics
Camera TypeTriple (3x)
SeriesSamsung Galaxy M
Company email addresssupport@samsung.com
Company postal addressSamsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK
SIM cardDual Physical SIM
Main camera64 megapixels
Colour (official name)Ocean blue
SD Card SlotmicroSDXC
FoldableNo
Compatible with latest UpdateNo
Manufacturer RefSM-M315F
Network4G
Resolution1080 x 2340
SAR head0.48
Screen size (in)6.4
Carrier compatibilityUnlocked
Year of Release2020
BrandSamsung
Weight191 g
  • 1-year minimum warranty
  • Free delivery on all items
  • Free 30-day returns
  • Excellent customer support