Items
All guaranteed 100% functional
Compatible charging cable
Refurbished price:£301.89
£1,533.00 newVersus £1,533.00 new
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
Reviewed 22/09/2026, United Kingdom.
Device was in great condition, but it was somehow unlockable, due to being linked to a US service provider (all according to AI). So, I was unable to access mobile data - phone only worked when linked to WIFI.
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Condition
Excellent
Purchased
13/09/2026
Reviewed 07/04/2025, United Kingdom.
Ordered a "Good" quality Samsung Galaxy S21 Ultra 5g phone and surprised as its almost like a brand new phone apart from a few cosmetic dints which were expected I suppose. Still to find out how battery performs over time but my wife is quiet impressed with the phone. Would definitely buy another phone from here as they've kept the word on quality of the phone. Keep up the good work and help the planet.
Galaxy S21 Ultra 5G 256GB - Silver - Unlocked
Galaxy S21 Ultra 5G 256GB - Silver - Unlocked
Condition
Good
Purchased
23/03/2025
Reviewed 27/08/2026, United Kingdom.
I orderedva premium level mobile. It looks and feels brand new. Arrived on time with plenty of tracking info. So far I am very pleased. This is the first time that I have purchased a refurbished item.
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Condition
Premium
Purchased
19/08/2026
Reviewed 22/08/2025, United Kingdom.
I’m really happy with my purchase – absolutely worth it! The condition was even better than described on the website. The only small thing I’ve noticed is that the screen response feels slightly slower compared to my old S21 Ultra in similar condition, but overall I’m very satisfied. It's a silver one just I coverd the camera wiht a black case! Definitely recommend Back Market :)
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Condition
Good
Purchased
04/08/2025
Reviewed 31/05/2026, United Kingdom.
my device was just as described, however within a few days it was clear it had a fault with mobile data. I contacted back market via help section. I received an identical phone the next day, and once my new phone had been updated I returned the faulty one. I was amazed how easy the issue I had was felt with and sorted. excellent service and the phone is working as it should.
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Condition
Excellent
Purchased
19/05/2026
Reviewed 14/07/2026, United Kingdom.
was very pleased with my phone Samsung galaxy S21 ultra. Condition was very good and battery life seems to be excellent far exceeding my expectation as suppliers description was good. The actual purchase was straight forward and delivery was very timely . Could not be more pleased
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Condition
Good
Purchased
06/07/2026
Reviewed 29/04/2026, United Kingdom.
Brought for my son. Arrived very quick and in excellent condition (ordered fair condition) no visible marks on the phone. Son is loving the phone and means I can save money on his contract
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Galaxy S21 Ultra 5G 128GB - Black - Unlocked
Condition
Good
Purchased
10/04/2026
6.8Screen size (in)
227 gWeight
0.71SAR head
USB-CConnector
AndroidOS
NoSD Card Slot
16 GBMemory (GB)
1.58SAR body
SilverColour
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: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. |
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. Learn more about our quality standards.
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