Terms apply
Proudly refurbished by Wireless Source
Comes with
Compatible charging cable
18 verified reviews in the last 24 months.
Dennis O.
Purchased on August 17, 2023
Verified purchaseI was referred to Back Market by a friend but was still a little skeptical but after finally making my purchase, I'm extremely satisfied. Phone came in basically brand new condition with manufacturers protective tape still on it. I thought there would be a "catch" to the deal but I honestly can't pick on anything negative. Will surely be looking here first for any future phones and devices. Keep it up!
Reviewed in the United States on September 6, 2023
Ricardo M.
Purchased on August 25, 2023
Verified purchasePurchased two in "Excellent Condition", unfortunately only one is. The other has marks all over top and bottom edges as well the rims around the cameras like it's been slid around on tables before. A fairly deep scratch in the center of the screen. Verified "Excellent Condition " was selected and ordered before leaving a review.
Reviewed in the United States on August 30, 2023
Ckoji M.
Purchased on May 28, 2025
Verified purchaseOrdered Samsung Galaxy S23 Ultra 512GB Green Excellent condition for $451.90 with tax on May 28 and delivered next day. Awesome right? No! They sent me the normal s23 not the ultra! They are offering full refund but not honor to send me the model I purchased for the same price. Don't waste time playing these games, disappointed never will shop with back market.
Reviewed in the United States on May 29, 2025
William H.
Purchased on May 9, 2025
Verified purchaseIt looks brand new and everything works as if new. Shipped timely as promised.
Reviewed in the United States on May 26, 2025
Ed A.
Purchased on May 7, 2024
Verified purchasePhone was exactly a described. Very happy with the price, purchase process, delivery speed, and product quality.
Reviewed in the United States on May 17, 2024
Lashaun N.
Purchased on February 20, 2025
Verified purchaseThey sent a phone locked by us cellular and us cellular said they can't unlock the phone since there is still a balanced owed by the pervious owner. A refund was issued instead of me actually getting a phone :/
Reviewed in the United States on March 10, 2025
Jasmine L.
Purchased on August 9, 2024
Verified purchaseit was exactly as described! also came on time as well, i’m so in love with it
Reviewed in the United States on August 28, 2024
Here’s what you help prevent on average by choosing a reborn smartphone over a brand new one.
That's like driving an SUV from NYC to Chicago.
That’s around the weight of a baseball.
That's like 20 dogs digging in your yard for a week.
That's like running a faucet for 3 days
SM-S918UZKAXAAManufacturing part numbers (MPN)
BlackColor
6.8Screen size (inches)
Galaxy S23 UltraModel
AndroidOS
1440 x 3088Resolution
T-MobileCarrier compatibility
256 GBStorage
12 GBMemory
Ready to own the night? Whether you’re headed to a concert or romantic night out, there’s no such thing as bad lighting with Night Mode. Galaxy S23 Ultra lets you capture epic content in any setting with stunning Nightography.
Create crystal-clear content worth sharing with Galaxy S23 Ultra 200MP camera. Whether you’re posting or printing, Galaxy S23 Ultra always does the moment justice.
Capture incredibly smooth video during life’s most exciting moments. With Video Stabilization, you can easily record daytime outdoor adventures or those spur-of-the-moment dance parties at night.
Capture scribbles, strokes of genius and everything in between with the built-in S Pen. Writing your next short story or sketching on the go has never felt this easy.
Capture epic selfies and beautiful photos with the click of your S Pen. Simply open up the camera app and click the button on the S Pen instead of the screen. Getting that great shot just got easier.
Whether you’re working hard, playing hard or doing both at the same time, smoothly switch between apps with our fastest processor ever.
Power through a packed day or a long night of gaming without worrying about your phone dying. The robust 5,000mAh battery has been fine-tuned with a smarter processor that helps manage energy usage without slowing you down.¹
You’re good on storage space. With an impressive amount of storage, starting at 256GB, you can enjoy being behind the camera without the stress that comes with getting close to filling up your phone.
Watch your content comfortably as Adaptive Vision Booster helps your screen adapt to your environment. Whether out in direct sunlight or in bed with the lights off, the contrast on Galaxy S23 Ultra expansive screen still looks amazing.
Easily answer video calls and collaborate with the team while remote with Galaxy S23 Ultra and Google Meet.²
Send even your large files —whether it’s cute puppy videos or work documents —between your Galaxy S23 Ultra and any iOS or Android device. Quick Share helps minimize frustration when sharing the epic.³
Get the group together for one shot and capture a variety of candid moments. Simply tap, record and choose from multiple stills and videos.⁴
Capture memories in stunning detail with 8K Video recording. No matter the moment, Galaxy S23 Ultra lets you shoot ultra-bright, crystal-clear scenes —day or night.
Life’s best moments could happen at any second. With a battery that supports up to 45W Super-Fast Charging, it’s easy to stay ready. Power up your Galaxy S23 Ultra quickly and get back to making more memories.⁵
Take on the day confidently with a tough yet stylish phone —one built to resist spills and scratches.
Design your own Galaxy experience with Galaxy S23 Ultra. With our versatile One UI, you can personalize a lock screen that reflects your lifestyle.
Feel good knowing your new phone supports what you support. Galaxy S23 Ultra was designed to help you live in a more sustainable world, while enjoying everything that makes that life amazing.
Diving right into your new Galaxy S23 Ultra is easy. Simply transfer your favorite content —photos, calendar dates, alarms and even call history —from your previous phone with Smart Switch.
¹Based on average battery life under typical usage conditions. Average expected performance based on typical use. Actual battery life depends on factors such as network, features selected, frequency of calls, and voice, data, and other application usage patterns. Results may vary.
²Requires devices to have One UI 2.5 or later. Must be logged into the same Google account and Google Meet app must be activated on each device.
³For Galaxy-to-Galaxy or any other devices: Quick Share to Galaxy smartphones and tablets smartphones and tablets with Android OS version 10.0 (Q) and One UI 2.1 or above requires Wi-Fi and Bluetooth connection.
³Quick Share to iOS and Android devices available by sending shared link: individual files shared cannot exceed 3GB (for a total of 5GB per day) and link will expire after two days; requires a Samsung account and Internet connection.
³For Galaxy-to-Galaxy device: Quick Share between Galaxy smartphones and tablets with Android OS version 10.0 (Q) and One UI 2.1 or above requires Wi-Fi and Bluetooth connection.
⁴Single Take captures images and video for up to 15 seconds.
⁵Wall charger sold separately; use only Samsung-approved chargers and cables. To avoid injury or damage to your device, do not use incompatible, worn or damaged batteries, chargers or cables. Supports up to 45W charging.
Manufacturing part numbers (MPN) | SM-S918UZKAXAA |
Color | Black |
Screen size (inches) | 6.8 |
Model | Galaxy S23 Ultra |
OS | Android |
Resolution | 1440 x 3088 |
Carrier compatibility | T-Mobile |
Storage | 256 GB |
Memory | 12 GB |
Screen type | Dynamic AMOLED 2X |
Network | 5G |
Manufacturer Ref. | SM-S918U |
Memory Card Slot | No |
Verizon compatible | No |
AT&T compatible | No |
T-Mobile compatible | Yes |
Release Year | 2023 |
Last OS Compatibility | Yes |
Foldable | No |
Front camera | 12 megapixels |
SAR head | 1.18 |
Series | Samsung Galaxy S |
SIM card | Physical SIM + eSIM |
Retro tech | No |
Main camera | 200 megapixels |
Color (official name) | Phantom Black |
Company name | Samsung Electronics |
Company email address | support@samsung.com |
Company postal address | Samsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK |
Brand | Samsung |
Weight | 8 oz |
Height | 6.4 in |
Width | 3.1 in |
Depth | 0.4 in |
The best prices for high-quality reborn tech by sellers we’ve checked and vetted. We don’t mind if you Google us.
Get to know us