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

Name: Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Brand: Samsung
Price: 275.00 EUR
Availability: InStock
Rating: 4.29 (6655 reviews)

(6,655 reviews)

€275.00

Save €1,323.00

Free delivery by 7 - 8 Sept

Express delivery by 4-7 Sept from €5.00

Restored professionally

Based on up to 100 points of inspection

Customer reviews for Galaxy S21 Ultra 5G

Overall rating

6,655 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

SamsungBrand
NoFoldable
AndroidOS
5GNetwork
1,58SAR body
40 megapixelsFront camera
SM-G998B/DSManufacturer Ref
USB-CConnector
12 GBMemory (GB)

The Galaxy S21 Ultra 5G is a flagship smartphone from Samsung, released in January 2021. Known for its exceptional camera capabilities and high-end performance, this device is a great option for users looking for a powerful and versatile smartphone that can handle everything from photography to gaming.

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 wide lens and 100x Space Zoom
Connectivity: 5G compatible for fast internet speeds.

Who is this for?

The Galaxy S21 Ultra 5G is ideal for photography enthusiasts, professionals, and power users who require a high-performance device. Its advanced camera features make it perfect for content creators, while its robust specifications cater to gamers and multitaskers.

Pros & Cons: Pros Cons Outstanding camera quality with versatile shooting options. Large and heavy design may not suit everyone. High-resolution, vibrant display for an immersive experience. Expensive accessories for optimal use, like the S Pen.
Why refurbished?

Choosing a refurbished Galaxy S21 Ultra 5G allows you to enjoy premium features while making an eco-conscious decision. Each device is thoroughly inspected and tested to meet high quality standards, ensuring reliability. Learn more about our quality standards.

Brand: Samsung
Foldable: No
OS: Android
Network: 5G
SAR body: 1,58
Front camera: 40 megapixels
Manufacturer Ref: SM-G998B/DS
Connector: USB-C
Memory (GB): 12 GB
Serie: Samsung Galaxy S
Screen type: Dynamic AMOLED 2X
Carrier compatibility: Unlocked
Width: 7,56 cm
Camera Type: Quadruple (4x)
Screen size (in): 6.8
SAR head: 0,714
SIM card: Dual Physical SIM + eSIM
Compatible with latest Update: Yes
Resolution: 1440 x 3200
SD Card Slot: No
Colour: Black
SAR body part: 2,56
Color (official name): Phantom Black
Year of Release: 2021
Main camera: 108 megapixels
Height: 16,15 cm
Weight: 227 g
Model: Galaxy S21 Ultra 5G
Depth: 0,89 cm
Storage: 128 GB

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Galaxy S21 Ultra 5GBlack • 128 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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