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

(6,653 reviews)

£310.00

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Customer reviews for Galaxy S21 Ultra 5G

Overall rating

6,653 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

Javed S.
Verified purchase
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
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
23/03/2025
Blacklab M.
Verified purchase
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
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
19/08/2026
Peter H.
Verified purchase
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
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
06/07/2026
Aidas A.
Verified purchase
Reviewed 27/03/2025, United Kingdom.
I ordered samsung s21 ultra,and it comes in very good condition. There are no scratches on the phone at all. It works like a new one . I would recommend to everyone it's better to buy refurbished on a half price than pay full price at store for a new one.
Galaxy S21 Ultra 5G 512GB - Black - Unlocked
Galaxy S21 Ultra 5G 512GB - Black - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
11/03/2025
Hakim A.
Verified purchase
Reviewed 13/05/2026, United Kingdom.
It is so far the best experience I had with a refurbished phone it is absolutely stunning the quality is Immaculate and the service has been fast Safe and efficient. I have recommended Back Market to my friend who bought a phone for his wife I also highly recommend this seller to anyone who wants a very good phone at a fraction of the price.
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Galaxy S21 Ultra 5G 128GB - Silver - 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
25/04/2026
Stephanie W.
Verified purchase
Reviewed 15/04/2026, United Kingdom.
Absolutely brilliant phone. I am very happy with my purchase. Samsung galaxy s21 ultra. The phone arrived in perfect condition and although I requested a phone in" good condition" I can't tell the difference from a brand new one. I would highly recommend Back market to anyone.
Galaxy S21 Ultra 5G 256GB - Dark Blue - Unlocked
Galaxy S21 Ultra 5G 256GB - Dark Blue - 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
11/04/2026
Richard M.
Verified purchase
Reviewed 15/06/2026, United Kingdom.
unfortunately I have locked myself out of the phone. I have given it to technicians and am waiting for them to get me back into it. as soon as I get it back I will transfer my data and send it on to you. I think that will be the middle of next week
Galaxy S21 Ultra 5G 128GB - Silver - Unlocked
Galaxy S21 Ultra 5G 128GB - Silver - 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
01/06/2026

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

Durability
Overall performance
Camera
Screen quality

6.8Screen size (in)
SM-G998BManufacturer Ref
2021Year of Release
SilverColour
12 GBMemory (GB)
Galaxy S21 Ultra 5GModel
NoFoldable
1440 x 3200Resolution
NoSD Card Slot

The Galaxy S21 Ultra 5G is a premium smartphone that combines cutting-edge technology with a sleek design. Released in January 2021, it remains a top choice for users seeking high performance and an exceptional camera experience.

Key features:

Release Date: January 2021
Display: 6.8-inch Dynamic AMOLED 2X, QHD+ resolution
Processor: Exynos 2100 (or Snapdragon 888 depending on the region)
Camera: Quad-camera system with 108MP wide lens and advanced zoom capabilities
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 demand the best from their devices. Its powerful camera system makes it perfect for capturing stunning images, while its large display is great for media consumption and multitasking.

Pros & Cons:

Pros	Cons
Outstanding camera quality with versatile shooting options.	Large size may not be suitable for all users.
Stunning display with vibrant colours and deep blacks.	Premium price point compared to other models.

Why refurbished?

Choosing a refurbished Galaxy S21 Ultra 5G allows you to enjoy flagship features while being eco-conscious. Back Market ensures that each device undergoes rigorous testing to guarantee quality and reliability. Learn more about our quality standards.

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

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

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

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Customer reviews for Galaxy S21 Ultra 5G

Overall rating

Rating details

Reviews

Reviews

Javed S.

Blacklab M.

Peter H.

Aidas A.

Hakim A.

Stephanie W.

Richard M.

Popular searches

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

Durability

Overall performance

Camera

Screen quality

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