Darn, it's out of stock
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Galaxy S25 Ultra 512GB - Black - Unlocked

Galaxy S25 Ultra 512GB - Black - Unlocked

is currently unavailable.

All devices are restored professionally based on a 25-point inspection

  • Buttons
  • SIM/memory card readerr
  • Data deletion
  • Chargers/cables
  • Unlocked by previous owner
  • GPS/positioning system
  • Cameras
  • External sensors
  • Biometric sensors
  • Wi-Fi and Bluetooth
  • IMEI serial number
  • Water damage
  • Flash and indicator lights
  • Mics and speakers
  • Input and output ports
  • Phone carrier
  • Battery health
  • Mechanical parts
  • Parts compatibility
  • Screen
  • Other features specific to this device

Galaxy S25 Ultra 512GB - Black - Unlocked: customer reviews

63 verified reviews in the last 24 months.

  • I

    Inna N.

    Purchased on the 10 April 2025

    Verified purchase

    My first experience shopping on Black Market — and it exceeded all my expectations! To be honest, I was really nervous about ordering the Samsung Ultra S25. But to my surprise and delight, the phone arrived absolutely like brand new, in original packaging — everything was perfect. I saved over £400 — just wow! The device works flawlessly, and I hope it stays that way. But even if something does go wrong, I have a 1-year warranty, so there’s really nothing to worry about. The experience turned out to be so much better than I expected. Also, a big thank you for the excellent customer service — the Black Market team truly impressed me!

    Reviewed in United Kingdom on 23 April 2025

  • R

    Ricardo P.

    Purchased on the 9 June 2025

    Verified purchase

    It was my first purchase with BackMarket, after my father-in-law 3rd purchase, I got confidence in ordering a S25 Ultra (the only one available at the time). I ordered it around 11:30am and got it delivered next day afternoon. I am amazingly satisfied and am happy with it.

    Reviewed in United Kingdom on 23 June 2025

  • T

    Tony L.

    Purchased on the 12 May 2025

    Verified purchase

    I bought S25 Ultra 1TB. This is my first time purchasing from BackMarket. I was really scared but thought give it a try. The product arrived in 2 days. I was surprised excellent quality. Looks brand new. No problems so far. Im enjoying the product. Will definitely buy all my tech from BackMarket from now on. We even have 12 month warranty. Thanks. 5 Stars. Satisfied customer.

    Reviewed in United Kingdom on 20 May 2025

  • B

    Bruce A.

    Purchased on the 20 March 2025

    Verified purchase

    Perfect as always quick delivery phone will be in perfect condition I presume as it's for my son so haven't opened it yet will open it on his birthday then find out the but great service all round look forward to getting my next phone when I decide I'm ready to upgrade from the one I've got

    Reviewed in United Kingdom on 20 April 2025

  • R

    Rays U.

    Purchased on the 13 June 2025

    Verified purchase

    Great purchase!!! Item arrived within 24 hours prompt! There'll be more feedback en route as I unpack the item!

    Reviewed in United Kingdom on 14 June 2025

  • R

    Robert H.

    Purchased on the 22 May 2025

    Verified purchase

    incredibly impressed by both the service of back market and the condition of the phone. You wouldn't know it wasn't brand new. I'll never buy a new device again. couldn't be happier.

    Reviewed in United Kingdom on 26 May 2025

  • J

    Joshua S.

    Purchased on the 19 April 2025

    Verified purchase

    I now always buy my devices from Back Market. It is flawless. In perfect condition and works like new. I will continue to only buy my Tech from Back Market. I cannot rate them enough!

    Reviewed in United Kingdom on 4 May 2025

See all 63 reviews

Reborn vs. brand new

Here’s what you help prevent on average by choosing a reborn smartphone over a brand new one.

77.3 kg of carbon

That’s like driving an old banger from London to Edinburgh and back.

6.3 oz of e-waste

That’s around the weight of a baseball.

537.1 lbs of raw materials

That's like 20 dogs digging in your yard for a week.

77,000 litres of water

That's like running a faucet for 3 days

Everything you ever wanted to know about the Galaxy S25 Ultra 512GB - Black - Unlocked

  • BlackColour

  • 512 GBStorage

  • 12 GBMemory

  • Galaxy S25 UltraModel

  • AndroidOS

  • NoRetro tech

  • USB-CConnector

  • 12Front camera

  • Samsung ElectronicsCompany name

Breeze through your day with superpowered Galaxy AI
The future of Galaxy AI is here. Galaxy S25 Ultra boosts your everyday – just press and hold the power button and it’ll take care of numerous tasks across different apps with a single voice command. Want to find pet-friendly restaurants and send the locations to a friend? Easy – just ask Galaxy S25 Ultra in your natural language and it will show you all the relevant restaurants nearby then send them on, just like that. Or if you see a pasta dish online and want to know how to cook it, ask “what is this and how do I make it?” Then Galaxy AI will get you the recipe with step-by-step instructions – instantly. Galaxy AI’s multimodal search capabilities also saves you time – ask Galaxy S25 Ultra to find family photos from a recent trip and voila – it’ll collect them all for you.

Next level speed, style and size
Buckle up – Galaxy S25 Ultra comes loaded with the fastest processor yet on a Galaxy smartphone. From multitasking to gaming, nothing’s too hardcore for the Qualcomm Snapdragon Elite 8 for Galaxy chipset, and with better battery life than Galaxy S24 Ultra you can do it all for longer. Games look better than ever with advanced Ray Tracing for ultra-realistic 3D graphics, meaning you won’t miss a beat of action. ProScaler intuitively boosts image quality by up to 40% so that every pic and video is more vivid and detailed than on previous Galaxy devices. And on the 6.9” Dynamic AMOLED 2X display, gaming and streaming are on another level with razor-sharp resolution and eye-popping colour.

Epic shooting without the effort
Galaxy S25 Ultra’s elite hardware and software put pro-level photography in your pocket. The outstanding S Series photography experience takes another huge leap with the AI-powered Next Gen ProVisual Engine, giving you stunning imagery with every shot. With natural skin tones, textures and true-to-life colours, you and your friends will be looking better than ever in selfies and group shots. Snap a portrait, and you’ll think you’ve been shooting on a pro-grade camera, thanks to the improved AI camera capabilities that make your subjects pop. When it comes to hardware, capture every nuance with Galaxy S25 Ultra’s high resolution 200MP main camera. Plus, the epic 50MP Ultra-Wide camera and improved Macro camera allow you to capture 4x more detailed images than Galaxy S24 Ultra.

Circle to Search
Search your way. Find whatever you need with touch, voice, text or visual prompts.

S Pen included
Leave the world of pinching and prodding behind and go pro with Samsung’s S Pen. Its fine nib lets you edit photos and videos with extreme accuracy, and when you need to get in the frame too, you can control the camera’s shutter and timer remotely, using its button.

5G enabled
Get ready for the next generation of mobile internet and experience incredible download speeds, or play games without the fear of lag. Please contact your mobile service provider regarding the 5G options currently available to you.

Galaxy S25 Ultra 512GB - Black - Unlocked
ColourBlack
Storage512 GB
Memory12 GB
ModelGalaxy S25 Ultra
OSAndroid
Retro techNo
ConnectorUSB-C
Front camera12
Company nameSamsung Electronics
SeriesSamsung Galaxy S
Company email addresssupport@samsung.com
Company postal addressSamsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK
SIM cardDual Physical SIM + eSIM
Colour (official name)Titanium Black
SD Card SlotNo
FoldableNo
Network5G
Resolution1440 x 3120
SAR head1.25
Screen size (in)6.9
Carrier compatibilityUnlocked
Year of Release2025
BrandSamsung
Weight233 g

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