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

Name: Galaxy S21 5G 256GB - Black - Unlocked
Brand: Samsung
Price: 261.00 EUR
Availability: InStock
Rating: 4.3 (19026 reviews)

(19,026 reviews)

€261.00

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Based on up to 100 points of inspection

Customer reviews for Galaxy S21 5G

Overall rating

19,026 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

Fiona M.
Verified purchase
Reviewed 10/02/2025, Ireland.
I can noy fault my experience with Back Market. I ordered the phone at 8.30 am on thursday and it was delivered to Ireland by 12pm on the Friday, the next day. The phone is perfect. Amazing quality. I will definitely buy more.
Galaxy S21 5G 256GB - Purple - Unlocked
Galaxy S21 5G 256GB - 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
30/01/2025
Liam D.
Verified purchase
Reviewed 12/08/2024, Ireland.
Excellent all around. Site was easy to use and kept me informed of postal delivery etc. I got two o hones and they are both excellent. The description was right on the mark and I will be definitely using thus site again.
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
29/07/2024
Anne H.
Verified purchase
Reviewed 10/09/2023, Ireland.
I love my new phone, it really does feel brand new. Being able to go sim only will halve my phone bill. The whole process was very easy, have recommended Back Market to several people already. No more massive bills, delighted
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
26/08/2023
John M.
Verified purchase
Reviewed 01/10/2025, Ireland.
Great, it arrived on time and was simple to transfer all the data across ftom my old mobile to my new one.
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
10/09/2025
James F.
Verified purchase
Reviewed 15/12/2024, Ireland.
I'm very happy with my purchase it's in mint condition and working perfectly. I would recommend Back Market to anyone
Galaxy S21 5G 128GB - Purple - Unlocked
Galaxy S21 5G 128GB - Purple - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
25/11/2024
Conor F.
Verified purchase
Reviewed 09/08/2023, Ireland.
First time buying a refurbished phone and will continue to by refurbished. . . . . . I have been using the phone for a while now and it is next to new, I am very happy with it and I will be consulting Back Market should I need any other devices. I would highly recommend!
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
26/07/2023
Ciara C.
Verified purchase
Reviewed 08/09/2025, Ireland.
Paid for a premium refurbished unlocked phone. When the phone came it was locked to another network. I had to return the phone leaving me with no phone for some days. I was not impressed. Will not use this site again.
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
27/08/2025

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

Durability
Overall performance
Camera
Screen quality

12 megapixelsMain camera
Dynamic AMOLED 2XScreen type
SamsungBrand
USB-CConnector
2021Year of Release
8 GBMemory (GB)
256 GBStorage
1.51SAR body
Physical SIM + eSIMSIM card

The Samsung Galaxy S21 5G is a well-rounded smartphone that delivers strong performance and impressive camera capabilities. Released in January 2021, it remains a popular choice for users looking for a reliable device that supports 5G connectivity.

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 camera system with 12MP wide, 64MP telephoto, and 12MP ultra-wide lenses
Connectivity: 5G compatible for fast downloads and streaming.

Who is this for?

The Samsung Galaxy S21 5G is ideal for professionals, students, and anyone who values a high-quality display and versatile camera features. It’s a solid option for users who want a capable smartphone without needing the latest model.

Pros & Cons: Pros Cons Vibrant display with excellent colour accuracy. No expandable storage option. Strong camera performance in various lighting conditions. Plastic back instead of glass, which may feel less premium.
Why refurbished?

Choosing a refurbished Samsung Galaxy S21 5G allows you to benefit from high-end features while making an eco-conscious choice. Back Market's refurbished devices are thoroughly tested to ensure quality and reliability. Learn more about our quality standards.

Main camera: 12 megapixels
Screen type: Dynamic AMOLED 2X
Brand: Samsung
Connector: USB-C
Year of Release: 2021
Memory (GB): 8 GB
Storage: 256 GB
SAR body: 1.51
SIM card: Physical SIM + eSIM
Color (official name): Black
Carrier compatibility: Unlocked
Screen size (in): 6.2
Front camera: 10 megapixels
Network: 5G
Resolution: 1080 x 2400
Colour: Black
SAR head: 0.46
OS: Android
Model: Galaxy S21 5G
SD Card Slot: No
Compatible with latest Update: Yes
Serie: Samsung Galaxy S
Weight: 340 g
Foldable: No

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

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

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Customer reviews for Galaxy S21 5G

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Rating details

Reviews

Reviews

Fiona M.

Liam D.

Anne H.

John M.

James F.

Conor F.

Ciara C.

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

Durability

Overall performance

Camera

Screen quality

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