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

Name: Galaxy S21 5G 128GB - Black - Unlocked
Brand: Samsung
Price: 210.00 EUR
Availability: InStock
Rating: 4.3 (19022 reviews)

(19,022 reviews)

€210.00

Save €198.00

Free delivery by 9 - 10 Jul

Express delivery by 8-9 Jul from €5.00

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy S21 5G

Overall rating

19,022 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

USB-CConnector
1.51SAR body
340 gWeight
1080 x 2400Resolution
2021Year of Release
BlackColor (official name)
AndroidOS
SamsungBrand
Dynamic AMOLED 2XScreen type

The Galaxy S21 5G stands out as a solid flagship smartphone from Samsung, offering a blend of premium features and a sleek design. Released in January 2021, it continues to be a reliable option for users seeking a high-performance device.

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 including a 12MP ultra-wide and 64MP telephoto lens
Connectivity: 5G compatible, ensuring fast downloads and low-latency performance.

Who is this for?

The Galaxy S21 5G is ideal for professionals and tech enthusiasts who require a powerful smartphone for multitasking, photography, and streaming. Its compact design makes it suitable for users who prefer a device that fits comfortably in hand or pocket.

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

Choosing a refurbished Galaxy S21 5G is an excellent way to access high-end features without purchasing a brand-new device. Each phone is thoroughly tested to ensure it meets Back Market’s quality standards. Learn more about our quality standards.

Connector: USB-C
SAR body: 1.51
Weight: 340 g
Resolution: 1080 x 2400
Year of Release: 2021
Color (official name): Black
OS: Android
Brand: Samsung
Screen type: Dynamic AMOLED 2X
Memory (GB): 8 GB
Model: Galaxy S21 5G
Storage: 128 GB
Foldable: No
Serie: Samsung Galaxy S
SAR head: 0.46
SD Card Slot: No
Carrier compatibility: Unlocked
Screen size (in): 6.2
Main camera: 12 megapixels
Network: 5G
Colour: Black
SIM card: Physical SIM + eSIM
Compatible with latest Update: Yes
Camera Type: Triple (3x)
Front camera: 10 megapixels

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

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Customer reviews for Galaxy S21 5G

Overall rating

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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