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

Name: Galaxy S21 5G 128GB - Black - Unlocked
Brand: Samsung
Price: 284.00 EUR
Availability: InStock
Rating: 4.3 (18925 reviews)

(18,925 reviews)

€284.00

Save €975.00

Free delivery by 3 - 6 Jul

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy S21 5G

Overall rating

18,925 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

SM-G991B/DSManufacturer Ref
Triple (3x)Camera Type
0,456SAR head
SamsungBrand
6.2Screen size (in)
Dual Physical SIM + eSIMSIM card
10 megapixelsFront camera
Dynamic AMOLED 2XScreen type
BlackColour

The Samsung Galaxy S21 5G is a versatile smartphone that combines cutting-edge technology with a sleek design. Released in January 2021, this model remains a popular choice for users seeking a reliable device with modern features.

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 for fast internet speeds and low-latency performance.

Who is this for?

The Galaxy S21 5G is ideal for users who want a powerful smartphone that excels in photography and media consumption. It suits professionals, students, and anyone looking for a reliable device with a vibrant display and strong performance.

Pros & Cons: Pros Cons High-quality display with vibrant colours. No expandable storage option available. Versatile camera system for various photography needs. Plastic back may not appeal to all users.
Why refurbished?

Choosing a refurbished Samsung Galaxy S21 5G allows you to enjoy a premium smartphone experience while being eco-conscious. Each device is rigorously tested to ensure quality and reliability. Learn more about our quality standards.

Manufacturer Ref: SM-G991B/DS
Camera Type: Triple (3x)
SAR head: 0,456
Brand: Samsung
Screen size (in): 6.2
SIM card: Dual Physical SIM + eSIM
Front camera: 10 megapixels
Screen type: Dynamic AMOLED 2X
Colour: Black
Serie: Samsung Galaxy S
Carrier compatibility: Unlocked
Network: 5G
Compatible with latest Update: Yes
OS: Android
Depth: 0,79 cm
Model: Galaxy S21 5G
SAR body: 1,509
Year of Release: 2021
SD Card Slot: No
Storage: 128 GB
Main camera: 12 megapixels
Resolution: 1080 x 2400
Width: 7,12 cm
Connector: USB-C
Foldable: No
Color (official name): Black
Memory (GB): 8 GB
Height: 15,17 cm
Weight: 169 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

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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