What is the difference between used, refurbished, and brand new phones?

Used phones are pre-owned devices sold as-is, usually with minimal testing or repairs. Refurbished phones are professionally tested, repaired if needed, cleaned, and restored to full working condition, often with a warranty. Brand new phones are factory-sealed, never used, and include a full manufacturer warranty.

Are your refurbished phones tested before sale?

Yes. All refurbished phones go through a thorough 70+ point inspection covering battery health, screen responsiveness, cameras, charging ports, and more.

Do your phones come with a warranty?

Brand new phones include a standard manufacturer warranty. Refurbished phones typically include an 18-month warranty. Used phones may include a limited warranty depending on the listing.

What condition are the used phones in?

We clearly list the condition of each used phone, such as Fair, Good, or Excellent. All used phones are tested for functionality but may show cosmetic wear.

Are your phones unlocked?

Yes. Unless otherwise stated, all phones are fully unlocked and compatible with UK networks including Vodafone, O2, EE, and Three.

What accessories come with the phone?

Refurbished and used phones include a charging cable, SIM tool, and Protection bundle. A charger plug is included only when listed on the product. Brand new phones include the original box and standard accessories. Packaging on refurbished and used phones may not be original.

Can I return the phone if I change my mind?

Yes. We offer a 30-day return policy on most phones. The phone must be returned in the same condition as received. See our return policy for full details.

How long does delivery take?

We offer fast and secure UK delivery, usually within 1 to 2 working days. Tracking information is provided once your order ships.

Do you offer "Buy Now, Pay Later" or installment options?

Yes. Buy Now, Pay Later options are available through trusted payment providers at checkout. Terms and availability vary by device.

Is it safe to buy refurbished phones online?

Yes. At Zextons Tech Store, every refurbished phone is professionally restored, tested, and backed by a warranty for reliable performance at a lower cost.

49% OFF

Samsung Galaxy S25 Ultra - Unlocked - Excellent-Titanium-Jet-Black (#494b4f)-256GB

Samsung Galaxy S25 Ultra - Unlocked Excellent Titanium Jet Black 256gb

Name: Samsung Galaxy S25 Ultra - Unlocked Excellent Titanium Jet Black 256gb
Brand: Samsung
SKU: SGS25U-5G-256GB-TJBK-E
Price: 634.99 GBP
Availability: OutOfStock

4.7/5 (10 reviews)

Free Next Day Delivery

Select Condition

excellent

Select Storage

256GB512GBSold Out1TBSold Out

Select Color

titanium blacktitanium silverbluetitanium graywhite titaniumjade greenSold Outpink goldSold Outtitanium jet blackSold Out

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Charging Cable

Protection Bundle

SIM Tool

Tree Planted

Choose Your Free SIM (Optional):

Product Summary :

The Samsung Galaxy S25 Ultra is a premium flagship smartphone, offering cutting-edge AI technology, a 200MP quad-camera system, and ultra-fast Snapdragon 8 Elite performance. Featuring a 6.9-inch Dynamic AMOLED 2X display, S Pen integration, and a 5000mAh battery with 45W fast charging, this S25 Ultra ensures seamless multitasking, pro-level photography, and exceptional durability with a titanium frame.

With storage options of 256GB and 512GB, 5G connectivity the Galaxy S25 Ultra is built for professionals, content creators, and tech enthusiasts who demand the best.

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Samsung · Refurbished Flagship

Refurbished Samsung Galaxy S25 Ultra — Unlocked, Excellent Condition

A refurbished Samsung Galaxy S25 Ultra from Zextons is Samsung's current flagship — the same Snapdragon 8 Elite chip, 200MP camera and titanium build Samsung sells new — in Excellent condition, at the price shown above. We put every unit through a 70+ point inspection before it's listed, back it with an 18-month warranty, and if it's not right for you, you've got 30 days to send it back. This is what you're actually getting.

Why buy this instead of a brand-new S25 Ultra?

Because the phone in your hand is identical either way, and the price isn't. Our refurbished Galaxy S25 Ultra runs a significant discount against Samsung's launch price for the same specification — you get identical Snapdragon 8 Elite hardware and the full Samsung software experience; only the box and the phone's cosmetic history differ from buying new.

256GB, 512GB & 1TB

Same Snapdragon 8 Elite chip and 12GB RAM at every storage size — only the price changes, and it's shown live in the selector above.

SM8750-AC Snapdragon 8 Elite, 12GB RAM

120Hz 6.9" Dynamic AMOLED 2X

200MP · 5x Optical zoom, 8K video

Galaxy AI Circle to Search, Gemini

A titanium flagship built to be seen, not just held

The S25 Ultra carries a 6.9-inch Dynamic LTPO AMOLED 2X display at 1440 × 3120 resolution with a smooth 120Hz refresh rate, wrapped in a titanium frame and protected by Gorilla Glass Armor 2. At 218g it's substantial without being unwieldy, and the design language — flat edges, minimal bezels, the built-in S Pen slot — is unmistakably "Ultra." You're choosing between seven finishes, though availability shifts with stock.

Performance that doesn't know it's refurbished

Refurbishment changes how a phone looks and what it costs — it doesn't touch the silicon. Every Zextons S25 Ultra runs the same Qualcomm Snapdragon 8 Elite (SM8750-AC) octa-core chipset, Adreno 830 GPU and 12GB of RAM as a brand-new unit, on Android 15 with 5G, physical dual SIM plus eSIM, and USB-C 3.2. It performs exactly as it would if you'd bought it new from Samsung, because internally, it is new-spec hardware.

5GDual SIM + eSIM

12GBRAM, every config

Galaxy AI: what actually makes this phone "smart"

The S25 Ultra runs Samsung's full Galaxy AI suite. Circle to Search lets you draw around anything on your screen and get answers instantly, while holding the side button activates a Gemini-powered assistant that works across Samsung and third-party apps. Now Brief and Now Bar surface proactive lock-screen suggestions, and the camera app gains Generative Edit, Portrait Studio and Audio Eraser.

A camera system built for people who don't want to compromise

The headline number is 200MP on the main sensor, but the more useful spec is the 50MP periscope telephoto, which gives genuine 5x optical zoom rather than a digital crop. Round that out with a 12MP front camera and 8K video recording, and you've got a system that covers everything from casual snapshots to footage you'd actually want to edit afterwards.

Battery life that keeps pace with everything else

A 5000mAh battery with 45W wired fast charging and wireless charging support means the S25 Ultra is built to survive a full day of the camera, display and AI features actually being used, not just benchmarked. None of this changes when you buy refurbished — battery capacity is a hardware spec, not a cosmetic one, and it's one of the specific things our inspection checks before a unit is ever graded.

Is it actually waterproof?

Yes. The S25 Ultra carries an IP68 rating, meaning it's dust-tight and rated to survive submersion in up to 1.5 metres of fresh water for 30 minutes. That rating comes from Samsung's original factory build, and refurbishment doesn't touch or compromise it.

IP68Dust & water resistance

1.5mFor 30 minutes

70+Inspection points

90%+Avg. battery health

What "Excellent" condition actually means

Excellent is our top refurbished grade: a like-new device with minimal to no visible marks, put through a 70+ point quality inspection that checks battery health, screen, cameras, buttons and connectors before it's ever listed for sale. Grading describes cosmetic appearance only — it has no bearing on function, which is verified to work exactly as it would on a brand-new device.

From our technical team: our inspected S25 Ultra units average 90%+ battery health, so you're not just getting a phone that looks new — you're getting full-day performance straight out of the box. Battery health is one of the first things the 70+ point inspection checks, precisely because a screen and body can look flawless while the battery underneath tells a different story.

What's covered if something goes wrong

Every refurbished Galaxy S25 Ultra comes with our 18-month warranty, covering internal faults from normal use with free diagnostics, repair or replacement — six months longer than the industry-standard 12 months you'll typically get elsewhere on a refurbished phone. If you simply change your mind, you have 30 days to send it back, no questions asked, and orders placed before noon on a weekday are dispatched the same day by tracked Royal Mail.

What's in the box, and why we plant a tree for every order

Each phone ships with a USB-C charging cable, a protective case, a SIM-removal tool, and a free SIM card from O2, Vodafone, EE or Three, all packed in a recyclable box. Buying refurbished also means one fewer new device manufactured, and through our Ecologi partnership we plant a tree for every order placed — a small thing, but it's part of why we do this rather than just selling new stock.

USB-C charging cable
Protective case
SIM-removal tool
Free SIM (O2 / Vodafone / EE / Three)

Comparing your options

If the S25 Ultra is more phone than you need, it's worth browsing our Samsung range before you decide. And if you've got an old phone sitting in a drawer, our trade-in program can take it off your hands and knock a bit more off whichever model you choose.

Refurbished Galaxy S24One generation back, at a lower price point.View Galaxy S24 →

Refurbished Galaxy S23 UltraTwo generations back, for the most budget-conscious buyers.View Galaxy S23 Ultra →

Trade-in programHand in your old phone, knock more off the price.Start a trade-in →

Frequently asked questions

Got a question this page hasn't covered? Check our full FAQs — here are the ones we hear most about this phone specifically:

Is the Galaxy S25 Ultra powerful once it's refurbished?+

Yes — refurbishment doesn't touch the internals that determine performance. Every unit runs the same Snapdragon 8 Elite chipset and 12GB RAM as a brand-new Galaxy S25 Ultra, so speed, gaming and multitasking are identical to buying new.

What is special about the S25 Ultra?+

It's the combination of a 200MP camera with genuine 5x optical zoom, a titanium build with Gorilla Glass Armor 2, and Samsung's full Galaxy AI suite. Few phones at any price pair that level of camera hardware with on-device AI features like Circle to Search and Generative Edit.

What cool things can the S25 Ultra do?+

It can shoot 8K video, zoom optically to 5x without losing detail, circle anything on screen to search it instantly, and use Generative Edit to rework a photo after you've taken it. The S Pen support also means it doubles as a note-taking and sketching device.

Does the S25 Ultra waterproof?+

Yes — it carries an IP68 rating, meaning it's dust-tight and rated to survive submersion in up to 1.5 metres of fresh water for 30 minutes. That's Samsung's factory rating, unaffected by our refurbishment process.

Free next-day UK delivery · 18-month warranty · 30-day returns · Shop the Galaxy S25 Ultra now →

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Saving the Planet

Buying a refurbished Samsung Galaxy S25 Ultra - Unlocked is a smart way to reduce your environmental footprint

Every year, millions of electronic devices are discarded, creating unnecessary waste. At Zextons Tech Store, choosing a refurbished Samsung Galaxy S25 Ultra - Unlocked means you're making a smarter and greener choice. Each device we carefully restore and resell helps extend the life of valuable materials, reduces electronic waste, and supports a more sustainable future. With our quality assurance and extended warranties, buying refurbished isn't just eco-friendly—it's also reliable and affordable.

Refurbished Samsung Galaxy S25 Ultra — Unlocked, Excellent Condition

Saving the Planet

Buying a refurbished Samsung Galaxy S25 Ultra - Unlocked is a smart way to reduce your environmental footprint

Samsung Galaxy S25 Ultra - Unlocked Excellent Titanium Jet Black 256gb

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Product Summary :

Refurbished Samsung Galaxy S25 Ultra — Unlocked, Excellent Condition

Why buy this instead of a brand-new S25 Ultra?

A titanium flagship built to be seen, not just held

Performance that doesn't know it's refurbished

Galaxy AI: what actually makes this phone "smart"

A camera system built for people who don't want to compromise