Galaxy S21 Ultra 5GSilver • 256 GB • Dual Physical SIM + eSIM

Name: Galaxy S21 Ultra 5G 256GB - Silver - Unlocked
Brand: Samsung
Price: 337.00 EUR
Availability: InStock
Rating: 4.29 (6636 reviews)

(6,636 reviews)

€337.00

Save €1,261.00

Free delivery by 8 - 9 Sept

Express delivery by 7-8 Sept from €5.00

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy S21 Ultra 5G

Overall rating

6,636 verified reviews

Rating details

Accessories
4.1/5
Appearance
4.4/5
Battery
4.1/5
Lens & Camera
4.5/5
Overall performance
4.3/5
Packaging
4.4/5
Shipping
4.6/5

Reviews

James L.
Verified purchase
Reviewed 05/08/2026, Ireland.
I was really surprised to see my new phone was in absolute perfect condition. I really had to examine the phone thoroughly to find even the tiniest of a mark. The shipping was bang on time and the packaging was very good too. I'll definitely be using Back Market next time also.
Galaxy S21 Ultra 5G 256GB - Black - Unlocked
Galaxy S21 Ultra 5G 256GB - 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
24/07/2026
Theresa M.
Verified purchase
Reviewed 05/01/2025, Ireland.
Great service.. quick delivery.. ONLY gripe if I had one was that we can't use Klarna on the page, which would have made additional purchases simpler. We had to use refurbed as they do offer that service and as a household of twelve we buy a LOT of phones so would make good business sense to adopt it
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Galaxy S21 Ultra 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
21/12/2024
Peter L.
Verified purchase
Reviewed 22/08/2026, Ireland.
Looks brand new, even though I ordered fair condition. Everything is perfect. Very happy with my purchase ☺️
Galaxy S21 Ultra 5G 256GB - Black - Unlocked
Galaxy S21 Ultra 5G 256GB - Black - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
15/08/2026
Adam D.
Verified purchase
Reviewed 05/04/2026, Ireland.
Amazing phone it's just like brand new im well happy with it . I'll definitely recommend back market to friends.
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Galaxy S21 Ultra 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
26/03/2026
John D.
Verified purchase
Reviewed 12/12/2024, Ireland.
great phone, like new. the only problem I have us when I was ordering I looked up the specs and it said it was a G988b, which is the European version firmware. I wanted this because I had already bought the same phone from refurbed.ie and they sent me a G988u1 phone, the problem was it's on US Firmware and I could not get it to update to latest firmware. they took it back and promised me a replacement but never followed through. this phone even though it's set to USA region firmware has updated ok, but only downside it's only got American English version. I think you should only sell phones that have regional based firmware to the same firmeare region. for example I should have received a Gʻ988B phone.
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Galaxy S21 Ultra 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
24/11/2024
Corey O.
Verified purchase
Reviewed 17/11/2023, Ireland.
I ordered a silver 128gb S21 Ultra off this site, I got it in fair condition expecting maybe a couple of scratches or dents. the phone was in absolutely FLAWLESS condition, I had to look for anything off, nothing. best refurbished device I ever bought. I recommend Backmarket and the reseller ReMarket 100%! fast delivery and great service!
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
14/11/2023
Haitam K.
Verified purchase
Reviewed 30/03/2025, Ireland.
My S21 ULTRA is doing great and matches the description. Thank you back market for your honesty and your service
Galaxy S21 Ultra 5G 256GB - Black - Unlocked
Galaxy S21 Ultra 5G 256GB - 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
14/03/2025

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

Durability
Overall performance
Camera
Screen quality

12 GBMemory (GB)
1.58SAR body
227 gWeight
0.71SAR head
2021Year of Release
256 GBStorage
108 megapixelsMain camera
Dual Physical SIM + eSIMSIM card
SM-G998B/DSManufacturer Ref

The Galaxy S21 Ultra 5G is a premium smartphone that exemplifies Samsung's flagship capabilities. Released in January 2021, it remains a top choice for users seeking cutting-edge technology and impressive features.

Key features:

Release Date: January 2021
Display: 6.8-inch Dynamic AMOLED 2X, QHD+ resolution
Processor: Exynos 2100 (International) / Snapdragon 888 (USA)
Camera: Quad-camera system with 108MP main sensor
Connectivity: 5G compatible for ultra-fast internet speeds.

Who is this for?

The Galaxy S21 Ultra 5G is ideal for professionals, photographers, and tech enthusiasts who demand high performance and exceptional camera quality. Its large display is great for media consumption, making it suitable for users who enjoy watching videos or playing games on their devices.

Pros & Cons: Pros Cons Exceptional camera capabilities with 108MP sensor. Large size may not be comfortable for one-handed use. Stunning display with vibrant colours and high resolution. Pricey accessories for full functionality.
Why refurbished?

Choosing a refurbished Galaxy S21 Ultra 5G allows you to enjoy a high-end smartphone experience while being environmentally conscious. Each device is thoroughly inspected and tested to meet Back Market's quality standards, ensuring reliability. Learn more about our quality standards.

Memory (GB): 12 GB
SAR body: 1.58
Weight: 227 g
SAR head: 0.71
Year of Release: 2021
Storage: 256 GB
Main camera: 108 megapixels
SIM card: Dual Physical SIM + eSIM
Manufacturer Ref: SM-G998B/DS
Color (official name): Phantom Silver
Serie: Samsung Galaxy S
SD Card Slot: No
Front camera: 40 megapixels
Colour: Silver
Resolution: 1440 x 3200
Screen type: Dynamic AMOLED 2X
Screen size (in): 6.8
OS: Android
Network: 5G
Brand: Samsung
Compatible with latest Update: Yes
Model: Galaxy S21 Ultra 5G
Carrier compatibility: Unlocked
Foldable: No

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Galaxy S21 Ultra 5GSilver • 256 GB • Dual Physical SIM + eSIM

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Customer reviews for Galaxy S21 Ultra 5G

Overall rating

Rating details

Reviews

Reviews

James L.

Theresa M.

Peter L.

Adam D.

John D.

Corey O.

Haitam K.

Popular searches

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

Durability

Overall performance

Camera

Screen quality

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