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

Name: Galaxy S21+ 5G 128GB - Black - Unlocked
Brand: Samsung
Price: 175.00 GBP
Availability: InStock
Rating: 4.33 (4376 reviews)

(4,376 reviews)

£175.00

before trade-in

Save £884.00

Free delivery by 8 - 9 Sept

Restored professionally

Based on up to 100-points of inspection

Customer reviews for Galaxy S21+ 5G

Overall rating

4,376 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
Frances G.
Verified purchase
Reviewed 14/10/2024, United Kingdom.
Bought the Samsung S21+ for my son's birthday. Ordered it Friday arrived the very next day by 10 am! I did pay for the £5 extra delivery charge and was super impressed by how quick it arrived considering it was stating it would arrive on Monday. I was also very pleased with the condition and battery life on the phone. It far exceeded my expectations. Will definitely be buying from you again in the near future. Thanks again for a nice quick and easy transaction... 😊
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
10/10/2024
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
Anita K.
Verified purchase
Reviewed 23/03/2025, United Kingdom.
I love my new S21 plus phone. It arrived in perfect condition. The battery is good so far. The delivery was very fast. This is my second phone from Backmarket and whenever I want to buy a phone in the future I will buy it from them.
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
11/03/2025

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

Durability
Overall performance
Camera
Screen quality

8 GBMemory (GB)
5GMobile network
UnlockedCarrier compatibility
1080 x 2400Resolution
128 GBStorage
AndroidOS
1.33SAR body
USB-CConnector
Phantom BlackColour (official name)

The Samsung Galaxy S21+ 5G is a high-performance smartphone that balances cutting-edge technology with a sleek design. Released in January 2021, it remains a strong contender in the smartphone market, offering a range of features suited for both casual and power users.

Key features:

Release Date: January 2021
Display: 6.7-inch Dynamic AMOLED 2X, FHD+ resolution
Processor: Exynos 2100 (International) or Snapdragon 888 (USA)
Camera: Triple rear cameras with 64MP telephoto lens
Connectivity: 5G compatible for fast data speeds and low latency.

Who is this for?

The Samsung Galaxy S21+ 5G is ideal for users who require a powerful smartphone for photography, gaming, and multitasking. It suits professionals, content creators, and anyone who enjoys a large, vibrant display for media consumption.

Pros & Cons:

Pros	Cons
High-quality display with vibrant colours and deep blacks.	No expandable storage option available.
Versatile camera system for various photography styles.	Large size may not be suitable for all users.

Why refurbished?

Opting for a refurbished Samsung Galaxy S21+ 5G allows you to enjoy premium features while being environmentally conscious. Back Market ensures that all devices undergo rigorous testing and quality checks, so you can trust you're getting a reliable product. Learn more about our quality standards.

Memory (GB): 8 GB
Mobile network: 5G
Carrier compatibility: Unlocked
Resolution: 1080 x 2400
Storage: 128 GB
OS: Android
SAR body: 1.33
Connector: USB-C
Colour (official name): Phantom Black
Screen size (in): 6.7
Camera Type: Triple (3x)
SAR head: 0.54
Colour: Black
Compatible with latest Update: Yes
Main camera: 12 megapixels
SIM card: Physical SIM + eSIM
Manufacturer Ref: SM-G996B
SD Card Slot: No
Model: Galaxy S21+ 5G
Serie: Samsung Galaxy S
Front camera: 10 megapixels
Weight: 200 g
Year of Release: 2021
Foldable: No
Brand: Samsung
Screen type: Dynamic AMOLED 2X

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

Galaxy S21+ 5GBlack • 128 GB • 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.

Frances G.

Martyn P.

Anita K.

Popular searches

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

Durability

Overall performance

Camera

Screen quality

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