Galaxy S23 UltraBlack • 256 GB • Dual Physical SIM + eSIM

Name: Galaxy S23 Ultra 256GB - Black - Unlocked
Brand: Samsung
Price: 379.00 GBP
Availability: InStock
Rating: 4.52 (8301 reviews)

(8,301 reviews)

£379.00

before trade-in

Save £1,220.00

Free delivery by 21 - 22 Sept

Express delivery by 18-21 Sept from £5.00

Restored professionally

Based on up to 100-points of inspection

Customer reviews for Galaxy S23 Ultra

Overall rating

8,301 verified reviews

Rating details

Accessories
4.2/5
Appearance
4.6/5
Battery
4.4/5
Lens & Camera
4.7/5
Overall performance
4.6/5
Packaging
4.5/5
Shipping
4.6/5

Reviews

Lorna P.
Verified purchase
Reviewed 12/09/2026, United Kingdom.
This is the second time I've purchased a refurbished phone from back market. My S20+ lasted years, but after I dropped it the usb and sim card slot stopped working, so I decided it was time for an upgrade. The S23 Ultra arrived in perfect condition, not a single mark on it. The battery life is great. It doesn't heat up during intensive use like my old S20 either. The optional insurance is brilliant too, it takes the worry away if anything happens to the phone. I would definitely purchase from Back Market again, and I recommend them to everyone I know looking for a new phone. I do have it in a robust case to protect it from any accidental drops. The second picture shows it next to my old S20+ for size comparison.
Galaxy S23 Ultra 512GB - Purple - Unlocked
Galaxy S23 Ultra 512GB - Purple - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
31/08/2026
Tetiana O.
Verified purchase
Reviewed 05/02/2026, United Kingdom.
Samsung Galaxy S23 Ultra arrived very fast. I ordered the one in fair condition, but it is in pristine condition! Runs fast and smooth, cameras are great. The lenses are like new. You can see on the images. I am very happy with a purchase!
Galaxy S23 Ultra 256GB - Green - Unlocked
Galaxy S23 Ultra 256GB - Green - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
07/01/2026
Paul B.
Verified purchase
Reviewed 14/07/2026, United Kingdom.
Bought this to replace an accidentally smashed Galaxy S20 Ultra for my daughter. She is delighted with the phone, looked brand new and works perfectly fine; was able to transfer all the data from her old Samsung straight across to it, without a hitch! Thank you!
Galaxy S23 Ultra 256GB - Purple - Unlocked
Galaxy S23 Ultra 256GB - Purple - 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
19/06/2026
Deborah C.
Verified purchase
Reviewed 24/05/2026, United Kingdom.
recieved my s23 ultra was like taking a brand new phone out the box no marks or scratches on the screen or back very happy with it would highly recomend and would buy again in the future .Oh forgot to say i orderd purple but got red but i dont mind i like the red arrived well packaged and on time .
Galaxy S23 Ultra 256GB - Purple - Unlocked
Galaxy S23 Ultra 256GB - Purple - 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
13/05/2026
Gloria J.
Verified purchase
Reviewed 25/09/2025, United Kingdom.
This was my first order from Back Market,and I’m really impressed. The delivery was fast and on time. I ordered fair condition of Galaxy S23 Ultra in purple , and it arrived in excellent condition, exactly as described. The color is beautiful, the phone looks and works like new, and the whole experience exceeded my expectations. Definitely happy with the quality and service!
Galaxy S23 Ultra 256GB - Purple - Unlocked
Galaxy S23 Ultra 256GB - Purple - Unlocked
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
19/09/2025
Gordon M.
Verified purchase
Reviewed 26/06/2026, United Kingdom.
I couldn't be happier with my Galaxy S23 Ultra. I needed a phone with a decent camera to take quality pics for my new crafting side hussle that's becoming a business. My basic smartphone that was adequate enough for years became no longer fit for purpose. I've never felt the need to get the latest phone and regularly upgrade. Spending over £400 was a huge leap for me. But getting a phone that was top of the range relatively recently for a fraction of the price was a non trainer, so reconditioned is the way to ho for me. In very happy
Galaxy S23 Ultra 256GB - Purple - Unlocked
Galaxy S23 Ultra 256GB - Purple - 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
13/06/2026
Krystian K.
Verified purchase
Reviewed 26/01/2026, United Kingdom.
I honestly couldn’t be happier with my purchase from Back Market. The Samsung Galaxy S23 Ultra I received looks absolutely brand new – not a single scratch or mark. The condition is way beyond my expectations. The phone itself is amazing and incredibly fast, and the delivery was surprisingly quick. I would never have expected a refurbished phone to arrive in such a perfect, like-new condition. I can genuinely recommend Back Market to everyone. This experience has completely exceeded my expectations!
Galaxy S23 Ultra 1000GB - Black - Unlocked
Galaxy S23 Ultra 1000GB - Black - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
26/12/2025

Everything you ever wanted to know about the Galaxy S23 Ultra

Durability
Overall performance
Camera
Screen quality

Galaxy S23 UltraModel
Dynamic AMOLED 2XScreen type
1440 x 3088Resolution
AndroidOS
256 GBStorage
YesCompatible with latest Update
NoFoldable
200 megapixelsMain camera
Phantom BlackColour (official name)

The Samsung Galaxy S23 Ultra is a flagship smartphone that made its debut in February 2023. While it’s now a generation behind Samsung’s latest, this model still stands tall thanks to its advanced display, high-resolution camera setup, and robust performance. For those looking for top-tier specs in 2025, the S23 Ultra remains a savvy, future-proof choice, especially when you’re happy to use something that’s less-than-brand-spanking-new—but still every bit as sharp.

Key features:

Release Date: February 2023
Display: 6.8-inch Dynamic AMOLED 2X, QHD+ (3088 x 1440 px), 120Hz refresh rate
Processor: Qualcomm Snapdragon 8 Gen 2 for Galaxy (global parent spec)
Camera: Quad rear camera system: 200MP wide, 12MP ultra-wide, 10MP telephoto (3x), 10MP periscope telephoto (10x optical zoom)
Operating System: Ships with Android 13 (upgradable via Samsung’s One UI)
Wi-Fi: Wi-Fi 6E support
Extras: S Pen stylus support, IP68 dust and water resistance, Gorilla Glass Victus 2 front/back, Armour aluminium frame
Connectivity: 5G compatible for speedy downloads and streaming

Who is this for?

The Galaxy S23 Ultra is a beast for power users who need their phone to be a sketchbook, a camera, and a productivity workhorse in one. It’s ideal for creatives, professionals who like to scribble notes with the S Pen, or anyone who wants that massive screen for Netflix marathons or detailed editing. Its camera system genuinely stands out for high-resolution photography and versatility, while the large, crisp display is purpose-built for multitaskers and mobile media fanatics. If you’re after a more pocketable device, the Galaxy S23 or S23+ might suit you better, but for those chasing flagship features, this is still one of the most complete Android packages you can find—refurbished or otherwise.

Pros & Cons:

Pros	Cons
200MP camera for ultra-detailed shots and crisp zoom.	Large size may be unwieldy for smaller hands or pockets.
S Pen support makes note-taking and sketching easy.	No microSD slot—expansion fans will miss it.
Vibrant, expansive QHD+ display with adaptive 120Hz refresh rate.	Premium build makes it a bit heavy—definitely chunky.
Built-in IP68 water and dust resistance.	Charging brick not included (in line with recent industry “progress”).

Why refurbished?

Picking a refurbished Galaxy S23 Ultra is an earth-friendly nod to circular tech—keeping quality devices in use and reducing e-waste. Every device on Back Market meets strict quality checks, so you know your phone has been thoroughly tested, cleaned, and is ready for its next adventure. Learn more about our quality standards.

Model: Galaxy S23 Ultra
Screen type: Dynamic AMOLED 2X
Resolution: 1440 x 3088
OS: Android
Storage: 256 GB
Compatible with latest Update: Yes
Foldable: No
Main camera: 200 megapixels
Colour (official name): Phantom Black
Carrier compatibility: Unlocked
Weight: 234 g
Front camera: 12 megapixels
Screen size (in): 6.8
SIM card: Dual Physical SIM + eSIM
Connector: USB-C
SAR head: 0.96
Mobile network: 5G
Colour: Black
SD Card Slot: No
Memory (GB): 8 GB
Year of Release: 2023
Serie: Samsung Galaxy S
SAR body: 1.4
Brand: Samsung

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Galaxy S23 UltraBlack • 256 GB • Dual Physical SIM + eSIM

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Customer reviews for Galaxy S23 Ultra

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Rating details

Reviews

Reviews

Lorna P.

Tetiana O.

Paul B.

Deborah C.

Gloria J.

Gordon M.

Krystian K.

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Everything you ever wanted to know about the Galaxy S23 Ultra

Durability

Overall performance

Camera

Screen quality

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