Galaxy S21+ 5GBlack • 128 GB • Dual Physical SIM + eSIM

(4,370 reviews)

£260.00

before trade-in

Save £799.00

Free delivery by 5 - 6 Aug

Express delivery by 4-5 Aug from £5.00

Restored professionally

Based on up to 100-points of inspection

Customer reviews for Galaxy S21+ 5G

Overall rating

4,370 verified reviews

Rating details

Accessories
4.1/5
Appearance
4.5/5
Battery
4.2/5
Lens & Camera
4.5/5
Overall performance
4.3/5
Packaging
4.5/5
Shipping
4.6/5

Reviews

Pippa T.
Verified purchase
Reviewed 20/10/2024, United Kingdom.
My first time using Back Market so was a bit apprehensive, but I'm super happy with my phone! Phone looks in perfect condition to me. Battery life seems great. Would definitely use again in the future!
Galaxy S21+ 5G 256GB - Pink - Unlocked
Galaxy S21+ 5G 256GB - Pink - 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
06/10/2024
Darren L.
Verified purchase
Reviewed 06/02/2026, United Kingdom.
phone came one day after I ordered it and it was better than I expected. the phone looked brand new they wasn't a single mark on it and the battery was in excellent condition.. I was over the moon with this phone and this is actual the 4th device I have bought from BackMarket, with all being In great condition. id highly recommend this site over any other refurbished phone sites.
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - 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
19/01/2026
David M.
Verified purchase
Reviewed 12/03/2025, United Kingdom.
After buying a phone for a family member through Back Market and seeing the quality and service I bought one for myself. The phone arrived on time and well packaged. The device was exactly as described. This is my first refurbished phone...so far so good.👍
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - Black - 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
20/02/2025
Stuart U.
Verified purchase
Reviewed 27/01/2026, United Kingdom.
Transaction went smoothly, quick delivery,phone in good condition ,only downside for me is that the phone is a US version ,samsung pay etc is all US version ,I do wish the refurbishment companies would put this in the description ,probably wouldn't have purchased had i known
Galaxy S21+ 5G 128GB - Black - Unlocked
Galaxy S21+ 5G 128GB - 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
18/01/2026
Peter S.
Verified purchase
Reviewed 11/12/2023, United Kingdom.
I was looking for a replacement of my old samsung s6, I had seen back market advertised & as I didn't want to splash out for a brand new phone I gave them a try.I was a bit apprehensive about buying a refurbished phone but I needn't have worried.Phone I ordered was samsung s21+ in excellent condition & that's exactly what it came in,not a mark on it & even has original protective film on front & back,battery was at 78% but soon charged up to 100%, very well packaged & excellent delivery.Thanks back market one very happy customer 👍 10/1
Galaxy S21+ 5G 128GB - Silver - Unlocked
Galaxy S21+ 5G 128GB - Silver - 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
27/11/2023
Vic P.
Verified purchase
Reviewed 06/11/2023, United Kingdom.
The Samsung Galaxy s21plus I purchased was as described "Excellent". As good as new as far as I can tell. Delivery was on time and the product was well packaged. Very happy with my dealings with Back Market. First time I have had a refurbished phone and I would certainly purchase my next one from Back Market.
Galaxy S21+ 5G 256GB - Black - Unlocked
Galaxy S21+ 5G 256GB - 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
26/10/2023
Martyn P.
Verified purchase
Reviewed 19/09/2025, United Kingdom.
I am surprised and very pleased with the phone that I got from you. You described it as fair condition but in fact its more like very good condition thanks will be getting my next phone from you again
Galaxy S21+ 5G 128GB - Purple - Unlocked
Galaxy S21+ 5G 128GB - Purple - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
01/09/2025

Everything you ever wanted to know about the Galaxy S21+ 5G

Durability
Overall performance
Camera
Screen quality

UnlockedCarrier compatibility
8 GBMemory (GB)
AndroidOS
2021Year of Release
USB-CConnector
5GMobile network
Dual Physical SIM + eSIMSIM card
SamsungBrand
NoFoldable

The Galaxy S21+ 5G is a powerful smartphone that combines a sleek design with advanced features, making it a strong contender in the competitive smartphone market. Released in January 2021, this model remains relevant with its robust performance and impressive camera capabilities.

Key features:

Release Date: January 2021
Display: 6.7-inch Dynamic AMOLED 2X, FHD+ resolution
Processor: Exynos 2100 (or Snapdragon 888, depending on the region)
Camera: Triple rear cameras with 64MP telephoto, 12MP wide, and 12MP ultra-wide
Connectivity: 5G compatible for ultra-fast downloads and low-latency performance

Who is this for?

The Galaxy S21+ 5G is ideal for users who seek a high-performing smartphone with a large, vibrant display. It's perfect for professionals, content creators, and anyone who enjoys streaming media or gaming on the go.

Pros & Cons:

Pros	Cons
Stunning display with 120Hz refresh rate for smooth scrolling.	Bulky design may not suit users looking for a compact phone.
Versatile camera system for various photography needs.	No expandable storage option limits storage flexibility.

Why refurbished?

Choosing a refurbished Galaxy S21+ 5G allows you to enjoy a premium smartphone experience while making an eco-conscious choice. Back Market ensures that all refurbished devices are rigorously tested for quality and performance. Learn more about our quality standards.

Carrier compatibility: Unlocked
Memory (GB): 8 GB
OS: Android
Year of Release: 2021
Connector: USB-C
Mobile network: 5G
SIM card: Dual Physical SIM + eSIM
Brand: Samsung
Foldable: No
Camera Type: Triple (3x)
Screen size (in): 6.7
Depth: 0,78 cm
Colour (official name): Phantom black
SAR body: 1,335
Height: 16,15 cm
Width: 7,56 cm
Screen type: Dynamic AMOLED 2X
Main camera: 12 megapixels
Front camera: 10 megapixels
SAR head: 0,541
Storage: 128 GB
Manufacturer Ref: SM-G996B/DS
SAR body part: 2,23
Model: Galaxy S21+ 5G
SD Card Slot: No
Resolution: 1080 x 2400
Colour: Black
Compatible with latest Update: Yes
Serie: Samsung Galaxy S
Weight: 200 g

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Galaxy S21+ 5GBlack • 128 GB • Dual Physical SIM + eSIM

Galaxy S21+ 5GBlack • 128 GB • Dual Physical SIM + eSIM

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Customer reviews for Galaxy S21+ 5G

Overall rating

Rating details

Reviews

Reviews

Pippa T.

Darren L.

David M.

Stuart U.

Peter S.

Vic P.

Martyn P.

Popular searches

Everything you ever wanted to know about the Galaxy S21+ 5G

Durability

Overall performance

Camera

Screen quality

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