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

Name: Galaxy S21 Ultra 5G 256GB - Black - Unlocked
Brand: Samsung
Price: 329.00 EUR
Availability: InStock
Rating: 4.29 (6646 reviews)

(6,646 reviews)

€329.00

Save €1,269.00

Free delivery by 18 - 21 Sept

Express delivery by 15-16 Sept from €5.00

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy S21 Ultra 5G

Overall rating

6,646 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

40 megapixelsFront camera
227 gWeight
6.8Screen size (in)
Phantom blackColor (official name)
SamsungBrand
7,56 cmWidth
AndroidOS
SM-G998B/DSManufacturer Ref
NoFoldable

The Galaxy S21 Ultra 5G is a flagship smartphone from Samsung that continues to impress with its advanced features and powerful performance. Released in January 2021, this device is designed for users who demand the best in photography, display quality, and overall functionality.

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 a 108MP main sensor and 100x Space Zoom
Connectivity: 5G compatible for ultra-fast downloads and low-latency performance.

Who is this for?

The Galaxy S21 Ultra 5G is ideal for professionals, photographers, and tech enthusiasts who require a high-performance smartphone with exceptional camera capabilities and a stunning display. Its versatility makes it suitable for both work and play, providing an immersive experience for content consumption and creation.

Pros & Cons: Pros Cons Exceptional camera performance with versatile shooting options. Large and heavy compared to other smartphones. Stunning display quality with vibrant colours and high resolution. Premium price point for flagship features.
Why refurbished?

Choosing a refurbished Galaxy S21 Ultra 5G allows you to experience top-tier technology while being eco-conscious. Back Market ensures that all refurbished devices undergo rigorous testing for quality and functionality. Learn more about our quality standards.

Front camera: 40 megapixels
Weight: 227 g
Screen size (in): 6.8
Color (official name): Phantom black
Brand: Samsung
Width: 7,56 cm
OS: Android
Manufacturer Ref: SM-G998B/DS
Foldable: No
Depth: 0,89 cm
Main camera: 108 megapixels
Year of Release: 2021
Model: Galaxy S21 Ultra 5G
Storage: 256 GB
Memory (GB): 12 GB
Resolution: 1440 x 3200
Connector: USB-C
Network: 5G
Compatible with latest Update: Yes
Colour: Black
SD Card Slot: No
Serie: Samsung Galaxy S
SAR body: 1,58
Camera Type: Quadruple (4x)
Height: 16,15 cm
Screen type: Dynamic AMOLED 2X
SAR head: 0,714
Carrier compatibility: Unlocked
SIM card: Dual Physical SIM + eSIM
SAR body part: 2,56

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Galaxy S21 Ultra 5GBlack • 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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