Galaxy S21 5GGrey • 256 GB • Physical SIM + eSIM

Name: Galaxy S21 5G 256GB - Grey - Unlocked
Brand: Samsung
Price: 217.00 GBP
Availability: InStock

(18,995 reviews)

£217.00

before trade-in

Save £877.00

Free delivery by 25 - 26 Jun

Express delivery by 24-25 Jun from £5.00

Restored professionally

Based on up to 100-points of inspection

Customer reviews for Galaxy S21 5G

Overall rating

18,995 verified reviews

Rating 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

Al B.
Verified purchase
Reviewed 17/04/2026, United Kingdom.
Phone 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
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
14/04/2026
Denise R.
Verified purchase
Reviewed 18/06/2026, United Kingdom.
phone 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
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
02/06/2026
Matthew S.
Verified purchase
Reviewed 26/04/2026, United Kingdom.
I 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
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
13/04/2026
Jenny B.
Verified purchase
Reviewed 08/06/2026, United Kingdom.
Condition 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
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
24/05/2026
Colette A.
Verified purchase
Reviewed 25/05/2026, United Kingdom.
Fantastic. 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
Galaxy S21 5G 128GB - Grey - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
11/05/2026
Edward P.
Verified purchase
Reviewed 21/07/2025, United Kingdom.
I have used black market for my wife's and my last three phones. every time the phones have been in perfect condition and worked with no problems at all. I have just bought a duel sim phone Galaxy S21 5G because I used one sim for Internet at my caravan and normal sim for phone. works perfect for me.
Galaxy S21 5G 128GB - White - Unlocked
Galaxy S21 5G 128GB - White - 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
05/07/2025
Dawn W.
Verified purchase
Reviewed 06/06/2025, United Kingdom.
Fabulous phone, arrived very quickly, chose a refurbished s21 and the condition is amazing I love it I've used back market before and I'll be using it in the future as well as recommending it to everyone I know 👌
Galaxy S21 5G 128GB - Grey - Unlocked
Galaxy S21 5G 128GB - Grey - 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
22/05/2025

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

Durability
Overall performance
Camera
Screen quality

AndroidOS
1.51SAR body part
Dynamic AMOLED 2XScreen type
GreyColour
169 gWeight
SamsungBrand
NoFoldable
Physical SIM + eSIMSIM card
12 megapixelsMain camera

The Samsung Galaxy S21 5G is a flagship smartphone that combines cutting-edge technology with a sleek design. Launched in January 2021, this model remains a strong contender in the market, offering a powerful performance and impressive camera capabilities.

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 ensuring ultra-fast downloads and low-latency performance.

Who is this for?

The Samsung Galaxy S21 5G is ideal for users who want a high-performing smartphone with excellent photography capabilities. It's well-suited for professionals, content creators, and anyone who enjoys streaming media on a vibrant display.

Pros & Cons:

Pros	Cons
Stunning display with vibrant colours and high refresh rate.	No expandable storage option available.
Versatile camera system for various photography styles.	Plastic back may not appeal to all users.

Why refurbished?

Choosing a refurbished Samsung Galaxy S21 5G allows you to enjoy premium features while being eco-conscious. Back Market ensures each device undergoes thorough testing and meets high-quality standards. Learn more about our quality standards.

OS: Android
SAR body part: 1.51
Screen type: Dynamic AMOLED 2X
Colour: Grey
Weight: 169 g
Brand: Samsung
Foldable: No
SIM card: Physical SIM + eSIM
Main camera: 12 megapixels
Front camera: 10 megapixels
SAR head: 0.46
Screen size (in): 6.2
Carrier compatibility: Unlocked
Storage: 256 GB
Memory (GB): 8 GB
Manufacturer Ref: SM-G991B
Compatible with latest Update: Yes
Mobile network: 5G
Resolution: 1080 x 2400
Colour (official name): Phantom Gray
Serie: Samsung Galaxy S
SD Card Slot: No
Year of Release: 2021
Model: Galaxy S21 5G

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Galaxy S21 5GGrey • 256 GB • Physical SIM + eSIM

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Customer reviews for Galaxy S21 5G

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Rating details

Reviews

Reviews

Al B.

Denise R.

Matthew S.

Jenny B.

Colette A.

Edward P.

Dawn W.

Popular searches

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

Durability

Overall performance

Camera

Screen quality

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