Galaxy S21 Ultra 5G 512GB - Silver - Unlocked

Customer reviews for Galaxy S21 Ultra 5G

Overall rating

6,527 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
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
James R.
Verified purchase
Reviewed 01/12/2024, Ireland.
only looked at phone ,quality perfect,as I got for a xmas gift, I havent done anthing else with it. will let you know further after xmas day
Galaxy S21 Ultra 5G 512GB - Black - Unlocked
Galaxy S21 Ultra 5G 512GB - 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
19/11/2024

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

Durability
Overall performance
Camera
Screen quality

512 GBStorage
SamsungBrand
16 GBMemory (GB)
6.8Screen size (in)
5GNetwork
2021Year of Release
SilverColour
UnlockedCarrier compatibility
Galaxy S21 Ultra 5GModel

The Galaxy S21 Ultra 5G is a premium smartphone that showcases Samsung's flagship technology. Released in January 2021, this model stands out with its impressive camera capabilities and vibrant display, making it a top choice for photography enthusiasts and power users alike.

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 10x optical zoom
Connectivity: 5G compatible for high-speed internet access.

Who is this for?

The Galaxy S21 Ultra 5G is ideal for professionals, content creators, and tech enthusiasts who demand top-tier performance and camera quality. Its large display and powerful hardware make it suitable for multitasking and media consumption, while its advanced camera system caters to those who enjoy photography and videography.

Pros & Cons:

Pros	Cons
Exceptional camera capabilities with versatile zoom.	Bulky design may not suit all users.
Stunning display with high refresh rate.	High price point compared to other models.

Why refurbished?

Choosing a refurbished Galaxy S21 Ultra 5G allows you to experience premium features while being environmentally conscious. Each device is thoroughly tested to meet Back Market's quality standards, ensuring reliability and performance. Scopri di più sui nostri standard di qualità.

Storage: 512 GB
Brand: Samsung
Memory (GB): 16 GB
Screen size (in): 6.8
Network: 5G
Year of Release: 2021
Colour: Silver
Carrier compatibility: Unlocked
Model: Galaxy S21 Ultra 5G
SIM card: Physical SIM + eSIM

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Galaxy S21 Ultra 5G 512GB - Silver - Unlocked

Customer reviews for Galaxy S21 Ultra 5G

Overall rating

Rating details

Reviews

Reviews

James L.

Theresa M.

Adam D.

John D.

Corey O.

Haitam K.

James R.

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

Durability

Overall performance

Camera

Screen quality

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