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Galaxy S21 5G
- Good
- 128 GB
- Physical SIM + eSIM
- White
£179.00
before trade-in
applies (starting at £0.49)
Save £847.00
Proudly refurbished by Rndtech ltd
Free delivery by 27 - 28 Oct
Comes with
Compatible charging cable
Often bought together
Galaxy S21 5G
White • 128 GB • Physical SIM + eSIM
Refurbished price:£179.00
£1,026.00 newVersus £1,026.00 new
Total price: £200.99
These items might be sold and delivered by different sellers.
Customer reviews for Galaxy S21 5G
Overall rating
4.3/54.3/519,377 verified reviewsRating details
Accessories
4.1/5
Appearance
4.5/5
Battery
4/5
Lens & Camera
4.5/5
Overall performance
4.2/5
Packaging
4.5/5
Shipping
4.6/5
Reviews
Reviews
Al B.
Verified purchaseReviewed 17/04/2026, United Kingdom.
5/5Phone is in excellent condition, much better than i was expecting, I can't find a single scratch on the phone, working great, came well packaged, quick shipping to Ireland, I highly recommend this site 🌟🌟🌟🌟🌟
Galaxy S21 5G 128GB - Purple - Unlocked
Galaxy S21 5G 128GB - Purple - Unlocked
Condition
Fair
Purchased
14/04/2026
Kane G.
Verified purchaseReviewed 21/07/2026, United Kingdom.
5/5considering it's fair condition it's still in great condition no problems no scratches or minor damage im amazed by the s21 Samsung next step is to sort out coverage option as i don't want damage to the phone as im very clumsy sometimes great item im very thankful
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
Condition
Fair
Purchased
13/07/2026
William S.
Verified purchaseReviewed 15/09/2026, United Kingdom.
5/5The phone was excellent, it exceeded my expectations. I previously bought this model from you for my wife and this one is to the same high standard. I'll certainly buy from you again and wholeheartedly recommend you to prospective buyers. A well deserved thanks.
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
Condition
Excellent
Purchased
12/09/2026
Jenny L.
Verified purchaseReviewed 23/09/2026, United Kingdom.
4.9/5It's like brand new I couldn't find a single mark. Straight forward to use. The only thing is the battery It's not new didn't have the option at the time so doesn't last long. Overall very pleased definitely recommend Back Market 👍
Galaxy S21 5G 256GB - Grey - Unlocked
Galaxy S21 5G 256GB - Grey - Unlocked
Condition
Fair
Purchased
04/09/2026
Denise R.
Verified purchaseReviewed 18/06/2026, United Kingdom.
5/5phone was in great condition looked like a new phone and I liked the colour only draw back was after setting it up had to give it at least 8 software updates now phone is working like it should but I would still buy another phone from this company if I needed one their alot cheaper than some of these shops that sell used phones
Galaxy S21 5G 128GB - Purple - Unlocked
Galaxy S21 5G 128GB - Purple - Unlocked
Condition
Excellent
Purchased
02/06/2026
Matthew S.
Verified purchaseReviewed 26/04/2026, United Kingdom.
4.4/5I was a little nervous to order a refurbished phone but I've gotta say this honestly feels like brand new! There's only minor signs of wear and tear on the main body but other than that it's pretty much perfect!
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
Condition
Excellent
Purchased
13/04/2026
Jenny B.
Verified purchaseReviewed 08/06/2026, United Kingdom.
4.9/5Condition said it was fair but its near on perfect. Bought for my mum who is in her 80s, easy for her to navigate her way round and easy for her to use. This is the 3rd time buying from this site, wouldn't buy phones from anywhere else now. Thankyou. 😀
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - Unlocked
Condition
Fair
Purchased
24/05/2026
Popular searches
Everything you ever wanted to know about the Galaxy S21 5G
Durability
Overall performance
Camera
Screen quality
NoSD Card Slot
10 megapixelsFront camera
1.51SAR body
Dynamic AMOLED 2XScreen type
8 GBMemory (GB)
USB-C + Jack 3.5mmConnector
12 megapixelsMain camera
NoFoldable
YesCompatible with latest Update
The Samsung Galaxy S21 5G is a flagship smartphone that combines a sleek design with powerful performance. Released in January 2021, it remains a popular choice for users who want a reliable device with modern features.
Key features:- Release Date: January 2021
- Display: 6.2-inch Dynamic AMOLED 2X, FHD+ resolution
- Processor: Exynos 2100 (international) / Snapdragon 888 (USA)
- Camera: Triple rear cameras with 12MP ultra-wide, 12MP wide, and 64MP telephoto lenses
- Connectivity: 5G compatible for fast internet speeds.
The Galaxy S21 5G is ideal for professionals, students, and anyone who enjoys photography or streaming content on the go. Its compact size and powerful capabilities make it suitable for users who need a dependable smartphone without the need for the latest model.
Pros & Cons:| Pros | Cons |
|---|---|
| Vibrant display with excellent colour accuracy. | No expandable storage option. |
| Versatile camera system for various photography styles. | Plastic back may feel less premium than glass alternatives. |
Why refurbished?
Opting for a refurbished Samsung Galaxy S21 5G allows you to enjoy a high-performance smartphone while being eco-conscious. Every device from Back Market is rigorously tested to ensure quality and reliability. Learn more about our quality standards.
- SD Card Slot
- No
- Front camera
- 10 megapixels
- SAR body
- 1.51
- Screen type
- Dynamic AMOLED 2X
- Memory (GB)
- 8 GB
- Connector
- USB-C + Jack 3.5mm
- Main camera
- 12 megapixels
- Foldable
- No
- Compatible with latest Update
- Yes
- Colour
- White
- Brand
- Samsung
- Model
- Galaxy S21 5G
- SIM card
- Physical SIM + eSIM
- Manufacturer Ref
- SM-G991B
- SAR head
- 0.46
- Storage
- 128 GB
- Colour (official name)
- Phantom white
- OS
- Android
- Mobile network
- 5G
- Screen size (in)
- 6.2
- Year of Release
- 2021
- Resolution
- 1080 x 2400
- Weight
- 169 g
- Carrier compatibility
- Unlocked
- Serie
- Samsung Galaxy S
Galaxy S21 5G
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