Free delivery by 7 - 8 Oct
Express delivery by 6-7 Oct from £5.00
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Visible signs of useVerified partsBattery for daily use
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1 / 2.
All guaranteed 100% functional
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1 / 3.
Galaxy S21 5G
- Fair
- Standard battery
- 128 GB
- Dual Physical SIM + eSIM
- White
£158.00
before trade-in
applies (starting at £0.49)
Save £941.00
Proudly refurbished by BEST4TECH
Free delivery by 7 - 8 Oct
Express delivery by 6-7 Oct from £5.00
Comes with
Compatible charging cable
Often bought together
Galaxy S21 5G
White • 128 GB • Dual Physical SIM + eSIM
Refurbished price:£158.00
£1,099.00 newVersus £1,099.00 new
Total price: £179.99
These items might be sold and delivered by different sellers.
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Pairs well with
- 4.2/5 (169)
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- 4.3/5 (36)
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Refurbished price:£21.99
- Smart Essentials
Refurbished price:£445.00
Customer reviews for Galaxy S21 5G
Overall rating
4.3/54.3/519,313 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
See itemCondition
Fair
Purchased
14/04/2026
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
See itemCondition
Fair
Purchased
04/09/2026
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
See itemCondition
Fair
Purchased
13/07/2026
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
See itemCondition
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
See itemCondition
Excellent
Purchased
13/04/2026
Zainab M.
Verified purchaseReviewed 06/07/2026, United Kingdom.
4.6/5Great Service. The first phone that arrived had something very minor wrong with it. I got on the app and within minutes they agreed to replace it with another. it arrived the next day. I didn't have to send back the original phone until I received the replacement, so I wouldn't be without a phone. Very happy with Backmarket
Galaxy S21 5G 256GB - Purple - Unlocked
See itemCondition
Excellent
Purchased
21/06/2026
Colette A.
Verified purchaseReviewed 25/05/2026, United Kingdom.
4.9/5Fantastic. Delivered quicker than date advised and although the product was said to be in fair condition, I would describe it as excellent! Have used back market a couple of times now and have advised others to do the same.
Galaxy S21 5G 128GB - Grey - Unlocked
See itemCondition
Fair
Purchased
11/05/2026
Popular searches
Everything you ever wanted to know about the Galaxy S21 5G
Durability
Overall performance
Camera
Screen quality
2021Year of Release
7,12 cmWidth
WhiteColour
Dual Physical SIM + eSIMSIM card
NoFoldable
AndroidOS
0,456SAR head
5GMobile network
Phantom whiteColour (official name)
The Samsung Galaxy S21 5G is a versatile smartphone that combines cutting-edge technology with a sleek design. Released in January 2021, it remains a strong contender in the market, offering impressive features for everyday use.
Key features:- 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
- Connectivity: 5G compatible for ultra-fast browsing and streaming
- Operating System: Ships with Android 11, upgradable to newer versions
The Galaxy S21 5G is ideal for users who need a powerful device for multitasking, photography, and media consumption. It’s suitable for professionals, students, and anyone who values a high-quality display and reliable performance in a smartphone.
Pros & Cons:| Pros | Cons |
|---|---|
| Stunning display with vibrant colours and high brightness. | No expandable storage option. |
| Excellent camera performance for photography enthusiasts. | Plastic back instead of glass, which may not appeal to some users. |
Why refurbished?
Choosing a refurbished Samsung Galaxy S21 5G allows you to enjoy a premium smartphone experience while being environmentally conscious. Each device is thoroughly inspected and tested to meet quality standards set by Back Market. Learn more about our quality standards.
- Year of Release
- 2021
- Width
- 7,12 cm
- Colour
- White
- SIM card
- Dual Physical SIM + eSIM
- Foldable
- No
- OS
- Android
- SAR head
- 0,456
- Mobile network
- 5G
- Colour (official name)
- Phantom white
- Depth
- 0,79 cm
- Screen size (in)
- 6.2
- Height
- 15,17 cm
- Memory (GB)
- 8 GB
- Model
- Galaxy S21 5G
- Screen type
- Dynamic AMOLED 2X
- Resolution
- 1080 x 2400
- SD Card Slot
- No
- Front camera
- 10 megapixels
- Brand
- Samsung
- Storage
- 128 GB
- Compatible with latest Update
- Yes
- Main camera
- 12 megapixels
- SAR body
- 1,509
- Weight
- 169 g
- Carrier compatibility
- Unlocked
- Manufacturer Ref
- SM-G991B/DS
- Serie
- Samsung Galaxy S
Galaxy S21 5G
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