Galaxy S25 UltraBlack • 256 GB • Dual Physical SIM

Name: Galaxy S25 Ultra 256GB - Black - Unlocked
Brand: Samsung
Price: 578.00 GBP
Availability: InStock
Rating: 4.55 (1144 reviews)

(1,144 reviews)

£578.00

before trade-in

Save £1,016.97

Free delivery by 27 - 28 Jul

Restored professionally

Based on up to 100-points of inspection

Customer reviews for Galaxy S25 Ultra

Overall rating

1,144 verified reviews

Rating details

Accessories
4.1/5
Appearance
4.7/5
Battery
4.5/5
Lens & Camera
4.7/5
Overall performance
4.6/5
Packaging
4.4/5
Shipping
4.6/5

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
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
Ray L.
Verified purchase
Reviewed 26/10/2025, United Kingdom.
I was informed that the phone would take 3 days for delivery. In fact it arrived the following morning after the order was placed. It was very well packed and inside was the Galaxy s25 Ultra phone, usb cable and SIM card tray opener. The condition was as good as a brand new phone. No marks, scratches or screen blemishes anywhere and it was fuly charged ready to go. Some reviews state the phones are not UK region This phone is definitely UK region it's accepted all of the data from my old device including social media apps and WhatsApp. I have downloaded all Samsung software updates and installed them with no issues. It is operating exactly as it should do. Thank you Back market for the excellent service and an amazing phone. You've certainly convinced me that buying refurbished is the way to go in the future.
Galaxy S25 Ultra 256GB - Silver - Unlocked
Galaxy S25 Ultra 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
16/10/2025

Everything you ever wanted to know about the Galaxy S25 Ultra

256 GBStorage
6.9Screen size (in)
BlackColour
SamsungBrand
Galaxy S25 UltraModel
UnlockedCarrier compatibility
2025Year of Release
5GMobile network
12 GBMemory (GB)

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.

Storage: 256 GB
Screen size (in): 6.9
Colour: Black
Brand: Samsung
Model: Galaxy S25 Ultra
Carrier compatibility: Unlocked
Year of Release: 2025
Mobile network: 5G
Memory (GB): 12 GB
SIM card: Dual Physical SIM

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Galaxy S25 UltraBlack • 256 GB • Dual Physical SIM

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Customer reviews for Galaxy S25 Ultra

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Rating details

Reviews

Reviews

Darren D.

Ryan B.

Labinot S.

Joseph O.

Jelena K.

Anil kumar V.

Ray L.

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Everything you ever wanted to know about the Galaxy S25 Ultra

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