Galaxy S25 UltraBlue • 256 GB • Dual Physical SIM

Name: Galaxy S25 Ultra 256GB - Blue - Unlocked
Brand: Samsung
Price: 569.00 GBP
Availability: InStock
Rating: 4.54 (2588 reviews)

(2,588 reviews)

£569.00

before trade-in

Save £660.24

Free delivery by 16 - 17 Sept

Restored professionally

Based on up to 100-points of inspection

Customer reviews for Galaxy S25 Ultra

Overall rating

2,588 verified reviews

Rating details

Accessories
4.2/5
Appearance
4.7/5
Battery
4.5/5
Lens & Camera
4.7/5
Overall performance
4.7/5
Packaging
4.4/5
Shipping
4.7/5

Reviews

Darren D.
Verified purchase
Reviewed 29/06/2026, United Kingdom.
I've been really impressed with the Galaxy S25 Ultra. The performance is excellent, the battery comfortably lasts all day, and the display is outstanding. The camera system is a significant step up from my previous phone, producing fantastic photos in a wide range of lighting conditions without needing to understand lots of camera settings. The S Pen is a useful addition, and the overall build quality feels premium. Despite having so many features, the phone is straightforward to use, which is something I particularly appreciate. Buying a refurbished device was also a great decision. The phone arrived in excellent condition, looked virtually brand new, and performed exactly as expected. It's reassuring to know I've saved money while also making a more environmentally friendly choice. Overall, I would highly recommend both the Galaxy S25 Ultra and purchasing a refurbished model. It's an excellent phone and represents fantastic value for money.
Galaxy S25 Ultra 256GB - Black - Unlocked
Galaxy S25 Ultra 256GB - 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
17/06/2026
Ryan B.
Verified purchase
Reviewed 20/05/2026, United Kingdom.
Bought a Samsung s25 ultra 512gb model, device was delivered earlier than expected, opted for the good condition, which came and was in excellent condition with limited signs of use. Battery health was 99%. Colour requested was blue-silver but appears more on the white side, overall would definitely use again for future purchases.
Galaxy S25 Ultra 512GB - Silver Blue - Unlocked
Galaxy S25 Ultra 512GB - Silver 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
14/05/2026
Labinot S.
Verified purchase
Reviewed 30/04/2026, United Kingdom.
I was genuinely surprised. The phone is practically brand new. Not a single mark or scratch anywhere to be seen. Did a battery health check which showed 100% battery health, I was not expecting that. I basically got a new phone for £700 less than buying directly from Samsung. Very happy. Will be using Backmarket again.
Galaxy S25 Ultra 512GB - Silver Blue - Unlocked
Galaxy S25 Ultra 512GB - Silver Blue - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
13/04/2026
Hen M.
Verified purchase
Reviewed 11/08/2026, United Kingdom.
Fantastic experience with Back Market! I bought the Galaxy S25 Ultra 512GB in Grey (Unlocked), and it arrived in pristine condition, working perfectly. It's an amazing phone with tons of storage, and buying refurbished is such a great way to get high-end tech while helping the planet. Super smooth transaction and quick delivery will definitely shop here again
Galaxy S25 Ultra 512GB - Grey - Unlocked
Galaxy S25 Ultra 512GB - Grey - 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
03/08/2026
Joseph O.
Verified purchase
Reviewed 31/05/2026, United Kingdom.
i ordered it and it got delivered the next day. Too soon to say how it's going to be long term but it's been really impressive so far. it does actually look like new i dont know why anyone would call it refurbushed. i'll surely be coming back.
Galaxy S25 Ultra 512GB - Silver Blue - Unlocked
Galaxy S25 Ultra 512GB - Silver Blue - 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
21/05/2026
Jelena K.
Verified purchase
Reviewed 01/07/2026, United Kingdom.
I'm extremely happy with my experience with Back Market. I bought a Galaxy S25 Ultra in Premium condition, and it arrived looking almost brand new. The phone works perfectly, the battery is excellent, and I'm very pleased with my purchase. I also traded in my old Galaxy S21 Ultra, and the whole process was smooth and honest. The assessment was completed quickly, and I received exactly the amount I had been offered. The payment arrived very fast. Buying and trading in through Back Market was easy, professional, and stress-free. I would definitely use them again and highly recommend them to anyone looking for quality refurbished devices. Thank you! 😊
Galaxy S25 Ultra 256GB - Silver - Unlocked
Galaxy S25 Ultra 256GB - Silver - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
15/06/2026
Anil kumar V.
Verified purchase
Reviewed 26/02/2026, United Kingdom.
First of all the the phone looks neat and clean like brand new come with all documents and cables with og box happy with that thank you back market for great experience with I will definitely purchase more from you
Galaxy S25 Ultra 256GB - Black - Unlocked
Galaxy S25 Ultra 256GB - 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
24/02/2026

Everything you ever wanted to know about the Galaxy S25 Ultra

BlueColour
6.9Screen size (in)
Quintuple (5x)Camera Type
USB-CConnector
256 GBStorage
YesCompatible with latest Update
SamsungBrand
2025Year of Release
218 gWeight

The Samsung Galaxy S25 Ultra is the flagship model from Samsung’s 2025 smartphone line-up, merging cutting-edge hardware with a familiar Galaxy S Ultra design. Three generations on from the S22 Ultra, the Galaxy S25 Ultra elevates mobile photography and productivity, thanks to its expansive display, upgraded chipset, and advanced camera setup. This pre-owned device offers both style and firepower for those who want a big-screen experience without carting a tablet around.

Key features:

Release Date: January 2025
Display: 6.8-inch Dynamic AMOLED 2X, QHD+ resolution, 120Hz refresh rate
Processor: Snapdragon 8 Gen 4 (or Samsung Exynos 2500, depending on region)*
Camera: Quad rear camera system with 200MP main sensor, ultra-wide, 3x and 5x telephoto lenses
Operating System: Ships with Android 15, One UI 7
Build Quality: Armour Aluminium frame, Gorilla Glass Victus 3 (front and back)
Connectivity: 5G support, Wi-Fi 7, Bluetooth 5.4
Stylus: Built-in S Pen for note-taking and creative tasks

Who is this for?

The Galaxy S25 Ultra is best suited for power users, creatives, and professionals who want a robust phone with a huge, vibrant display and top-tier camera features. If you handle a lot of multitasking, rely heavily on productivity apps, or love sketching ideas with a stylus, it’s built for you. Compared to the Galaxy S24 Ultra, the S25 Ultra brings a faster chip and camera improvements. However, if you prefer a smaller phone or don't often use the S Pen, you may find other models handier.

Pros & Cons:

Pros	Cons
Giant, sharp display great for streaming and drawing.	Large size isn’t pocket-friendly for everyone.
200MP camera with versatile shooting options.	Heavier build, which some may find bulky for single-handed use.
Latest Wi-Fi 7 support for fast and stable connections.	Premium features may be more than casual users need.
S Pen included for handwriting and creative tasks.	No microSD slot — expansion fans will miss it (again).

Why refurbished?

Choosing a refurbished Galaxy S25 Ultra is a practical move towards a greener planet, letting tech live a second, third, or fourth life. All devices sold via Back Market undergo in-depth testing and checks—so you get performance you can trust. Learn more about our quality standards.

*Processor may differ by region; see official Samsung documentation or [GSMArena](https://www.gsmarena.com/samsung_galaxy_s25_ultra-*) for global spec details.

Colour: Blue
Screen size (in): 6.9
Camera Type: Quintuple (5x)
Connector: USB-C
Storage: 256 GB
Compatible with latest Update: Yes
Brand: Samsung
Year of Release: 2025
Weight: 218 g
OS: Android
SD Card Slot: No
Front camera: 12
Model: Galaxy S25 Ultra
Memory (GB): 12 GB
Mobile network: 5G
Serie: Samsung Galaxy S
Carrier compatibility: Unlocked
Foldable: No
Manufacturer Ref: SM-S938
SAR head: 1.25
Colour (official name): Titanium Silver Blue
SIM card: Dual Physical SIM
Resolution: 1440x3120

Choose location

Suggested searches

Popular searches

Galaxy S25 UltraBlue • 256 GB • Dual Physical SIM

Galaxy S25 UltraBlue • 256 GB • Dual Physical SIM

Restored professionally

Comes with

Often bought together

Customer reviews for Galaxy S25 Ultra

Overall rating

Rating details

Reviews

Reviews

Darren D.

Ryan B.

Labinot S.

Hen M.

Joseph O.

Jelena K.

Anil kumar V.

Popular searches

Everything you ever wanted to know about the Galaxy S25 Ultra

Related articles

iPhone vs Samsung Galaxy: Which is best for you? | Back Market

New vs. Refurbished: The Environmental Impact of the Tech Industry | Back Market

Samsung Galaxy S24 vs. Google Pixel 9 series comparison | Back Market

How to reset a Samsung tablet: Easy Guide | Back Market

How to factory reset a Samsung phone | Back Market

Samsung Galaxy S25 series colours: Every shade in the lineup | Back Market

Samsung Galaxy S26 review | Back Market

Welcome to Back Market