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Galaxy S21 5G 128GB - Grey - Unlocked

£166.96
before trade-in
This is the price of the device when sold new. It’s included to show how much you save when buying refurbished versus new. It reflects either the manufacturer’s original price or the average market price of other distributors today.
Save £859.04


Free delivery by 20 Mar - 21 Mar
Express delivery by 18 Mar-19 Mar from £8.00

Ta-da!

Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G
FairStandard battery128 GBPhysical SIM + eSIMGrey
£166.96
before trade-in
This is the price of the device when sold new. It’s included to show how much you save when buying refurbished versus new. It reflects either the manufacturer’s original price or the average market price of other distributors today.
Save £859.04

Proudly refurbished by Ontronics Ltd (United Kingdom)

Free delivery by 20 Mar - 21 Mar
Express delivery by 18 Mar-19 Mar from £8.00

Comes with

Compatible charging cable

Galaxy S21 5G 128GB - Grey - Unlocked: customer reviews

4.3/5

3,651 verified reviews in the last 12 months.

  • J

    Jane A.

    Purchased on the 13 September 2024

    5/5

    Thankyou BackMarket you made my purchase thr best decision i have made when it come to choosing my phone. The phone arrived quickly even though it was a refurbished one it looked brand new, the phone was i pristine condition and works perfictly, I would definatly recommend to anyone.

    Reviewed in United Kingdom on 9 December 2024

  • A

    Amy W.

    Purchased on the 12 September 2024

    5/5

    I've used Back market for tech over the last 2-3 years now and have always found it to be great. Good choice of products, wide variety of condition and price, something for every budget. Quick service, reliable, even when there's a problem its dealt with quickly and efficiently. I have been highly recommending you to all my and friends. Buying reconditioned products is good for the environment and that's really important to me. 5 star products with great customer service and good for the planet.

    Reviewed in United Kingdom on 9 December 2024

  • B

    Beryl M.

    Purchased on the 30 October 2024

    5/5

    I treated mysel to a new phone last year for my birthday and After a couple of weeks I hated it, it was like a brick but stuck it out as long as I could till I couldn't stand it any more so decided to treat myself again this year. After being a little dubious about refurbished phones, I did some research and decided to go with Back market and so pleased I did its a S21 wasn't sure what rate to go for and settled on good I thought I can live with a few scratches witch hopefully wouldn't show under a case. Wow what a surprise it came within 48 hrs and is immaculate looks brand new. I absolutely love it thank you back market I've recommended you already and will be back 😀 I don't know about 5* I give you 10 🥰

    Reviewed in United Kingdom on 9 December 2024

  • S

    Sarah W.

    Purchased on the 7 December 2024

    4.5/5

    Bought my first refurbished phone as a gift and got to say it probably won't be my last purchase. The phone was rated as good condition, but I would say it was more in excellent condition. Other than not having the original box the phone was in near pristine, I say near because there was one tiny and I mean tiny imperfection on the casing, but don't let this put you off as I had to look hard to find it!! Well worth the money on looks alone. I can't comment on the functionality because as I say it is a gift so I won't know about that till after Christmas :).

    Reviewed in United Kingdom on 11 December 2024

  • W

    William T.

    Purchased on the 4 November 2024

    4/5

    Good range of choice, well described quality of refurbished products and tast delivery.... tge new phone was up abd running way quicker than a) I expected or b) my network supplier would have managed 👍🏻😁

    Reviewed in United Kingdom on 9 December 2024

  • R

    Richard N.

    Purchased on the 6 April 2024

    4.9/5

    Well I must say I was a little dubious ordering a refurbished phone but honestly I'm more than happy with it. You wouldn't know it was refurbished at all. I went for the excellent condition samsung s21 and it's perfect and £95 cheaper than anywhere else offering the same phone.

    Reviewed in United Kingdom on 9 December 2024

  • H

    Howard S.

    Purchased on the 10 April 2024

    4.9/5

    Arrived quickly. Condition (pristine) was accurate - no marks or scratches. Set-up was fine just like a new phone (fairly easy with Samsung Smart Switch). Battery condition is good - retains charge well. A bargain compared to a new phone - and I prefer to use refurbished equipment as long as the condition, price and technology meet my needs. Full marks (so far).

    Reviewed in United Kingdom on 9 December 2024

See all 3,651 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 S21 5G 128GB - Grey - Unlocked


  • Durability

  • Overall performance

  • Camera

  • Screen quality

  • GreyColour

  • 128 GBStorage

  • 8 GBMemory

  • Galaxy S21 5GModel

  • AndroidOS

  • NoRetro tech

  • Dynamic AMOLED 2XScreen type

  • USB-CConnector

  • 10 megapixelsFront camera

The Galaxy S21 5G is a flagship smartphone from Samsung, released in January 2021. This model features a sleek design and advanced capabilities, making it suitable for users who appreciate both style and performance.

Key features:
  • Display: 6.2-inch Dynamic AMOLED 2X, FHD+ resolution
  • Processor: Exynos 2100 (or Snapdragon 888, depending on the region)
  • Camera: Triple rear cameras with a 12MP ultra-wide, 12MP wide, and 64MP telephoto lens
  • Connectivity: 5G compatible for fast data speeds
  • Operating System: Ships with Android 11, upgradable to the latest versions
Who is this for?

The Galaxy S21 5G is ideal for professionals, content creators, and everyday users looking for a powerful smartphone with a versatile camera system. It suits those who enjoy streaming, gaming, and photography, providing a balanced experience compared to newer models like the Galaxy S22.

Pros & Cons:
Pros Cons
High-quality display with vibrant colours and deep blacks. No expandable storage option.
Solid camera performance in various lighting conditions. Battery life may not last as long as newer models.

Why refurbished?

Choosing a refurbished Galaxy S21 5G allows you to access premium features while being environmentally conscious. Each device is rigorously tested to ensure quality and reliability. Learn more about our quality standards.

Galaxy S21 5G 128GB - Grey - Unlocked
ColourGrey
Storage128 GB
Memory8 GB
ModelGalaxy S21 5G
OSAndroid
Retro techNo
Screen typeDynamic AMOLED 2X
ConnectorUSB-C
Front camera10 megapixels
Company email addresssupport@samsung.com
Company nameSamsung Electronics
Camera TypeTriple (3x)
Company postal addressSamsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK
SeriesSamsung Galaxy S
SIM cardPhysical SIM + eSIM
Main camera12 megapixels
Colour (official name)Phantom Gray
SD Card SlotNo
FoldableNo
Compatible with latest UpdateYes
Manufacturer RefSM-G991B
Network5G
Resolution1080 x 2400
SAR body1.51
SAR head0.46
Screen size (in)6.2
Carrier compatibilityUnlocked
Year of Release2021
BrandSamsung
Weight171 g
  • 1-year minimum warranty
  • Free delivery on all items
  • Free 30-day returns
  • Excellent customer support