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

Name: Galaxy S21 Ultra 5G 256GB - Silver - Unlocked
Brand: Samsung
Price: 226.99 GBP
Availability: InStock

(6,587 reviews)

£226.99

before trade-in

Save £1,371.01

Free delivery by 29 - 30 Jun

Restored professionally

Based on up to 100-points of inspection

Customer reviews for Galaxy S21 Ultra 5G

Overall rating

6,587 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
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
Deivids S.
Verified purchase
Reviewed 04/03/2026, United Kingdom.
Much better than previous phone, this time rear camera was refurbished right and auto focused without the onbnoxious manual tapping. Battery is solid so far and minimal scratches all for a good price :)
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
19/02/2026
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
Andrea N.
Verified purchase
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
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
19/05/2026
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
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

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

Durability
Overall performance
Camera
Screen quality

SamsungBrand
1.58SAR body
Galaxy S21 Ultra 5GModel
256 GBStorage
AndroidOS
12 GBMemory (GB)
5GMobile network
40 megapixelsFront camera
108 megapixelsMain camera

The Galaxy S21 Ultra 5G is a premium smartphone that exemplifies Samsung's flagship capabilities. Released in January 2021, it remains a top choice for users seeking cutting-edge technology and impressive features.

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 main sensor
Connectivity: 5G compatible for ultra-fast internet speeds.

Who is this for?

The Galaxy S21 Ultra 5G is ideal for professionals, photographers, and tech enthusiasts who demand high performance and exceptional camera quality. Its large display is great for media consumption, making it suitable for users who enjoy watching videos or playing games on their devices.

Pros & Cons:

Pros	Cons
Exceptional camera capabilities with 108MP sensor.	Large size may not be comfortable for one-handed use.
Stunning display with vibrant colours and high resolution.	Pricey accessories for full functionality.

Why refurbished?

Choosing a refurbished Galaxy S21 Ultra 5G allows you to enjoy a high-end smartphone experience while being environmentally conscious. Each device is thoroughly inspected and tested to meet Back Market's quality standards, ensuring reliability. Learn more about our quality standards.

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

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

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

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Customer reviews for Galaxy S21 Ultra 5G

Overall rating

Rating details

Reviews

Reviews

Javed S.

Hakim A.

Deivids S.

Richard M.

Andrea N.

Stephanie W.

Aidas A.

Popular searches

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

Durability

Overall performance

Camera

Screen quality

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