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Galaxy S23 Ultra

£405.77
before trade-in
This is the price of the device when sold new. It’s included to show how much you save when buying refurbished versus new. It reflects either the manufacturer’s original price or the average market price of other distributors today.
Save £1,193.23


Free delivery by 27 Mar - 28 Mar

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

  • Buttons
  • SIM and/or memory card reader
  • Data deletion
  • Chargers and/or cables
  • Unlocking
  • GPS and/or positioning system
  • Cameras
  • External sensors
  • Biometric sensors
  • WiFi and Bluetooth
  • IMEI serial number
  • Oxidation
  • 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

Ta-da!

Galaxy S23 Ultra 256GB - Black - Unlocked
Galaxy S23 Ultra
FairStandard battery256 GBDual Physical SIM + eSIMBlack
£405.77
before trade-in
This is the price of the device when sold new. It’s included to show how much you save when buying refurbished versus new. It reflects either the manufacturer’s original price or the average market price of other distributors today.
Save £1,193.23

Proudly refurbished by Stock Must Go Ltd (United Kingdom)

Free delivery by 27 Mar - 28 Mar

Comes with

Compatible charging cable

Galaxy S23 Ultra: customer reviews

4.5/5

1,387 verified reviews in the last 12 months.

  • T

    Tanya P.

    Purchased on the 24 November 2024

    Verified purchase
    5/5

    I ordered a 'good' condition Samsung S23 ultra Sunday afternoon. Paid a little for faster despatch and received Tuesday morning. I am so pleased. Only marks I can see to suggest it is a refurbishment is a little scratch near the charging port. Thank you so much 👌

    Reviewed in United Kingdom on 9 December 2024

    Galaxy S23 Ultra 256GB - Black - Unlocked
  • L

    Lois S.

    Purchased on the 12 March 2025

    Verified purchase
    5/5

    This is the first time buying a refurbished phone so I was a little worried. I brought a phone in 'good' condition and have to say I'm so impressed. It's in near perfect condition and is working as if it was brand new. I paid extra for the faster delivery and it was delivered the next day. Will definitely be using this company again.

    Reviewed in United Kingdom on 15 March 2025

    Galaxy S23 Ultra 256GB - Black - Unlocked
  • L

    Lan B.

    Purchased on the 15 February 2025

    Verified purchase
    5/5

    Exactly as described at a fair price. Perfect for my teen son who wanted a decent phone model but wasn’t fussy about new/refurbished. Very pleased with the product and service and would buy from Backmarket again.

    Reviewed in United Kingdom on 2 March 2025

    Galaxy S23 Ultra 512GB - Green - Unlocked
  • H

    Henry B.

    Purchased on the 13 February 2025

    Verified purchase
    5/5

    First time, taking a 'punt' at a refurbished phone purchase & was not disappointed. Outstanding, fast (less than 48 hours) service from initial order to receiving my S23 Ultra (advertised as in excellent condition) & of which was in 'mint condition' at a price that is a fraction of the current retail price. No nonsense customer service between both Back Market & delivery company was fantastic; notified / kept informed of said delivery every step of the way. I highly recommend (it's a no brainer), if you are hesitant of a refurb purchase - this is one customer that will defo be opting for the refurbished purchase option in the future (Back Market is the place to shop!)

    Reviewed in United Kingdom on 24 February 2025

    Galaxy S23 Ultra 512GB - Green - Unlocked
  • B

    Ben D.

    Purchased on the 26 October 2024

    Verified purchase
    4.5/5

    I ordered a good grade phone so expected it to have some blemishes on the back and sides which it did. As the phone will always be in a case this is not an issue. However the good description states that the screen should be flawless but unfortunately there are a couple of feint scratches. Once I'd applied a screen protector these can't be seen so not serious enough to warrant returning the phone. So, overall I'm very happy with my refurbished S23 Ultra which was significantly less than half the price of buying one new. The order process is straightforward and phone was delivered on time so would definitely recommend Back Market for buying quality refurbished tech.

    Reviewed in United Kingdom on 9 December 2024

    Galaxy S23 Ultra 512GB - Black - Unlocked
  • W

    Wendel B.

    Purchased on the 30 September 2024

    Verified purchase
    5/5

    I went for an excellent grade s23 ultra. The phone arrived in good condition and was given a tracking which helped me time when I should be home. The phone is good as new as expected and very happy with the purchase. This isn't the first purchase from Back Market but all I can say is that you are consistent. Keep up the good work and good quality assurance and customers like myself will always come back. protect the environment and buy refurbished.

    Reviewed in United Kingdom on 9 December 2024

    Galaxy S23 Ultra 256GB - Black - Unlocked
  • D

    David G.

    Purchased on the 12 March 2025

    Verified purchase
    5/5

    I bought a Samsung Galaxy S23 ultra. I went for the excellent grade phone and it really is spotless. not a mark on it. I am really very happy. the phone operates perfectly, it's fast, had an amazing camera and still has 5 years of security updates according to the Samsung website. you don't get that with many other phone brands not even Sony. the delivery was next day, what's not to like...

    Reviewed in United Kingdom on 20 March 2025

    Galaxy S23 Ultra 512GB - Black - Unlocked
See all 1,387 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 S23 Ultra


  • Durability

  • Overall performance

  • Camera

  • Screen quality

  • BlackColour

  • 256 GBStorage

  • 8 GBMemory

  • Galaxy S23 UltraModel

  • AndroidOS

  • NoRetro tech

  • Dynamic AMOLED 2XScreen type

  • USB-CConnector

  • 12 megapixelsFront camera

Galaxy S23 Ultra 256 GB (Dual Sim) - Black - Unlocked
Galaxy S23 Ultra 256GB - Black - Unlocked
ColourBlack
Storage256 GB
Memory8 GB
ModelGalaxy S23 Ultra
OSAndroid
Retro techNo
Screen typeDynamic AMOLED 2X
ConnectorUSB-C
Front camera12 megapixels
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
Main camera200 megapixels
Colour (official name)Phantom Black
SD Card SlotNo
FoldableNo
Compatible with latest UpdateYes
Network5G
Resolution1440 x 3088
SAR body1.4
SAR head0.96
Screen size (in)6.8
Carrier compatibilityUnlocked
Year of Release2023
BrandSamsung
Weight234 g
  • 1-year minimum warranty
  • Free delivery on all items
  • Free 30-day returns
  • Excellent customer support