Galaxy S23 Ultra 256GB - Green - Unlocked

  • Galaxy S23 Ultra - Unlocked
1 - 4
  • Current
$1,199.99 new


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Works with all carriers

Comes with

Good Karma
Charging cable

For you? Only the best.

Refurbished and sold by Maroon Mobile

Live on Back Market since 2019


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Galaxy S23 Ultra - Unlocked's customer reviews


44 verified reviews in the last 6 months.

  • A

    Armando M.


    Reviewed in the United States on August 20, 2023

    Galaxy S23 Ultra arrived in excellent condition and unlocked just as advertised. Was a bit disappointed for only receiving the charging cable and not the brick but was more than happy my new Galaxy S23 Ultra I purchased at Back Market.
    Galaxy S23 Ultra 512GB - Phantom Black - Unlocked

    Purchased on August 5, 2023

  • J

    Joshua M.


    Reviewed in the United States on August 13, 2023

    I have had the phone about a week now and it has worked flawlessly. I ordered excellent condition and the phone came in brand new condition. I haven't had any issues out of the phone and would order from Back Market again with no hesitation.
    Galaxy S23 Ultra 512GB - Red - Unlocked

    Purchased on July 28, 2023

  • M

    Mark K.


    Reviewed in the United States on May 29, 2023

    The phone is terrific! The camera is superb with 100x zoom. I came back to Android from Apple and have to relearn the system. The only downsides are that the Android has too much "social media" software installed from the factory and some apps have redundant and complicated maneuvering within the app. You have to click several places just to discard an item. Some apps only allow discarding one item at a time with no "select all" feature. This is very cumbersome but overall, I am very satisfied. The phone arrived in pristine condition and was easy to set up. Thank you Back Market!
    Galaxy S23 Ultra 512GB - Green - Unlocked

    Purchased on May 14, 2023

  • P

    Phoenix B.


    Reviewed in the United States on September 20, 2023

    I just got it, perfect condition seems clean runs pretty good so far. I am testing everything out but so far so good. I’m very satisfied. If anything turns out wrong with it, I will update it here for everyone to see. Only thing is it came with a charger and charger box, but the box was for a fast charger. That’s just a little thing it’s a small price to pay for getting $500 off and for helping take care of the environment.
    Galaxy S23 Ultra 512GB - Red - Unlocked

    Purchased on September 17, 2023

  • D

    Dennis O.


    Reviewed in the United States on September 6, 2023

    I 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!
    Galaxy S23 Ultra 512GB - Green - Locked T-Mobile

    Purchased on August 17, 2023

  • R

    Ricardo M.


    Reviewed in the United States on August 30, 2023

    Purchased 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.
    Galaxy S23 Ultra 256GB - Black - Locked T-Mobile

    Purchased on August 25, 2023

  • G

    Greg R.


    Reviewed in the United States on August 13, 2023

    Love the phone no problems yet took some getting used to as I went from a Note 9 to this phone so I'm still learning where some things are as apposed to the Note 9 but love the phone so far great Camera also supper clear picture and the Battery lufe so far last a pretty good while without having to recharge
    Galaxy S23 Ultra 512GB - Phantom Black - Unlocked

    Purchased on July 30, 2023

See all 44 reviews

Reborn vs. brand new
Here’s what you help prevent on average by choosing a reborn smartphone over a brand new one.

171.1 lbs of CO2e

That's like driving an SUV from NYC to Chicago.

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.

20,341.2 gallons of water

That's like running a faucet for 3 days

Everything you ever wanted to know about the Galaxy S23 Ultra 256GB - Green - Unlocked

Samsung Galaxy S23 Ultra 5G (256GB, 8GB) 6.8" AMOLED 2X, 200MP Camera, Global VoLTE (Fully Unlocked for AT&T, Verizon, T-Mobile, Global) S918U (Green)

  • 6.8" Dynamic AMOLED 2X Infinity-O QHD+, Edge Screen, 120Hz Refresh Rate, 500ppi, 1750nit (Outdoor Peak), 1440 x 3088 pixels, 5000mAh Battery
  • 256GB, 8GB RAM, No SD Card Slot, Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4nm), Octa-Core, Adreno 740
  • Rear Camera: 200MP, f/1.7 + 10MP, f/4.9 + 10MP, f/2.4 + 12MP, f/2.2, Front Camera: 12MP, f/2.2, Android 13, One UI 5.1
  • 2G: GSM 850/900/1800/1900, CDMA 800/1900, 3G: HSDPA 850/900/1700(AWS)/1900/2100, CDMA2000 1xEV-DO, 4G LTE: 1/2/3/4/5/7/8/12/13/14/18/19/20/25/26/28/29/30/38/39/40/41/46/48/66/71, 5G: 1/7/28/41/66/71/78/258/260/261 SA/NSA/Sub6/mmWave - Single SIM
  • No Warranty. Compatible with Most GSM and CDMA Carriers like T-Mobile, AT&T, MetroPCS, etc. Will Also work with CDMA Carriers Such as Verizon, Sprint.

Galaxy S23 Ultra 256GB - Green - Unlocked

  • Manufacturing part numbers (MPN) : SM-S918U
  • Screen size (inches) : 6.8
  • Carrier compatibility : Unlocked
  • Storage : 256 GB
  • Memory : 8 GB
  • Model : Galaxy S23 Ultra
  • eSIM : No
  • Processor brand : Snapdragon
  • Megapixels : 200
  • OS : Android
  • Resolution : 1440x3088
  • Foldable : No
  • Screen type : AMOLED
  • Connector : USB-C
  • Network : GSM/CDMA + 5G
  • Release Date : February 2023
  • Double SIM : No
  • Manufacturer Ref. : SM-S918U
  • Series : Galaxy S
  • Color : Green
  • SIM card : Single-SIM + eSIM
  • Verizon compatible : Yes
  • AT&T compatible : Yes
  • T-Mobile compatible : Yes
  • Sprint Compatible : Yes
  • Release Year : 2023
  • SIM format : Nano
  • Memory Card Slot : No
  • Series : Galaxy S
  • SAR head : 1
  • U.S. Cellular compatible : Yes
  • Brand : Samsung
  • Weight : 8 oz
  • Height : 6.4 in
  • Width : 3.1 in
  • Depth : 0.4 in

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