Galaxy S23 UltraGreen • 1000 GB • Dual Physical SIM + eSIM

(7,427 reviews)

£491.71

before trade-in

Save £1,107.29

Free delivery by 19 - 22 Jun

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Based on up to 100-points of inspection

Customer reviews for Galaxy S23 Ultra

Overall rating

7,427 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

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
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
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
Elise R.
Verified purchase
Reviewed 09/06/2026, United Kingdom.
Absolutely brilliant. I paid a bit more for premium condition and I have had no issues at all Phone is like new. I was skeptical buying refurbished at first but I will always get refurbished in future
Galaxy S23 Ultra 256GB - Black - Unlocked
Galaxy S23 Ultra 256GB - Black - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
22/05/2026
Alexandra N.
Verified purchase
Reviewed 21/01/2026, United Kingdom.
It's my 3rd device bought from this website. Each time I am very pleased and gives me confidence to always check here first when searching for mobiles/laptops and what else there is. Its easy to navigate platform >> add your items in the basket, make waranty and payment choices. My latest order is a phone Samsung S23 Ultra that works really good, like new. I am a happy customer and I recommend you give it a go and see for yourself. Also, it makes sense to do some good to the planet and try to get refurbished items if you can. I hope it will help you make an informed decision. Many thanks for reading.
Galaxy S23 Ultra 256GB - Grey - Unlocked
Galaxy S23 Ultra 256GB - Grey - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
08/01/2026
Peter C.
Verified purchase
Reviewed 28/09/2025, United Kingdom.
Totally satisfied with my purchase. It is a top rated Which? reviewed phone, Samsung Galaxy S23 Ultra. Promptly delivered and in perfect condition and working well. Many new features that my old phone did not have, so I feel it is a really good upgrade - I got it from Back Market for a brilliant value for money purchase price. Love that it is refurbished too. It's an added bonus that the carbon footprint is so much lower than a new phone. Refurbished to this specification is always best. Really appreciate the ethics as well as the product, many thanks.
Galaxy S23 Ultra 256GB - Grey - Unlocked
Galaxy S23 Ultra 256GB - Grey - Unlocked
Condition
Premium
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
12/09/2025

Everything you ever wanted to know about the Galaxy S23 Ultra

Durability
Overall performance
Camera
Screen quality

YesCompatible with latest Update
234 gWeight
NoSD Card Slot
12 megapixelsFront camera
AndroidOS
Galaxy S23 UltraModel
12 GBMemory (GB)
1000 GBStorage
SamsungBrand

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.

Compatible with latest Update: Yes
Weight: 234 g
SD Card Slot: No
Front camera: 12 megapixels
OS: Android
Model: Galaxy S23 Ultra
Memory (GB): 12 GB
Storage: 1000 GB
Brand: Samsung
Year of Release: 2023
SAR head: 0,96
Foldable: No
Resolution: 1440 x 3088
Screen size (in): 6.8
Screen type: Dynamic AMOLED 2X
Manufacturer Ref: SM-S918B/DS
Colour (official name): Green
SIM card: Dual Physical SIM + eSIM
Carrier compatibility: Unlocked
Main camera: 200 megapixels
SAR body: 1,40
Mobile network: 5G
Colour: Green
Serie: Samsung Galaxy S

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Galaxy S23 UltraGreen • 1000 GB • Dual Physical SIM + eSIM

Galaxy S23 UltraGreen • 1000 GB • Dual Physical SIM + eSIM

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Customer reviews for Galaxy S23 Ultra

Overall rating

Rating details

Reviews

Reviews

Tetiana O.

Deborah C.

Gloria J.

Krystian K.

Elise R.

Alexandra N.

Peter C.

Popular searches

Everything you ever wanted to know about the Galaxy S23 Ultra

Durability

Overall performance

Camera

Screen quality

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