More sustainable than new

Galaxy S21 Ultra 5G 256GB - Black - Unlocked

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Galaxy S21 Ultra 5G - Unlocked's customer reviews

4.3/5

228 verified reviews in the last 6 months.

  • M

    Michael E.

    Purchased on February 2, 2024

    4/5

    The Samsung S21 Ultra appears to be fine in the two weeks since we received it and was as promised. Ordering was easy and delivery was as expected. Our trade-in offer was much lower than we had anticipated ($25.00) for a phone in complete working order without problems. I have previously purchased certified, refurbished smartphones directly from Samsung and felt we received a much better & fairer trade-in offer. While the price of the S21 Ultra was cheaper from Back Market, I believe that I might have fared better buying from Samsung in terms of overall cost. I will research more closely when it's time for our next purchase.

    Reviewed in the United States on February 19, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
  • S

    Shawn N.

    Purchased on May 20, 2024

    4.6/5

    The phone is amazing and just as I expected. It did have a small scratch on the front that is deep enough to see when the phone isn't on when I ordered the excellent version, but other than that it's great!! I would definitely recommend it to anyone looking to buy refurbished!

    Reviewed in the United States on July 1, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
  • G

    Gerald P.

    Purchased on March 10, 2024

    4.5/5

    Trading in my beat-up S21Ultra with damaged screen for this excellent condition replacement enabled me to, in turn, take advantage of trade-in promotion at Samsung Store. My old phone was worthless for trade-in otherwise. The refurbisher who purchased my trade-in tried to claim that it didn't take a charge... but with my photos in hand, the Backmarket staff swiftly dealt with that. Be sure to take photos of live phone, and of each stage of packaging, so that Backmarket is able to support you in case of dispute. Great customer service!

    Reviewed in the United States on July 1, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
  • G

    Gene B.

    Purchased on February 29, 2024

    5/5

    the whole experience was seamless and great! couldn't have asked for a better experience. I purchased S21 Ultra 256gb Unlocked. while I was hesitant about buying a refurbished device, then my device showed up and all the hesitance went right away! will purchase from again !

    Reviewed in the United States on March 21, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
  • J

    Jared R.

    Purchased on January 17, 2024

    4.9/5

    The phone is great. It works perfectly, the camera is awesome and te phone's processing capabilities are in good condition. I always buy refurbished because it's cheaper and this product came on time and in great condition so, thank you!

    Reviewed in the United States on February 7, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
  • K

    Kyle M.

    Purchased on May 27, 2024

    4.6/5

    There was a scratch on the back by the camera, I give the quality of this refurbished device 4.5/5 stars. Everything else 💪 appears to be in good working order. This is a great phone for the price. The ultra that is. 12gb ram...super fast 🏃‍♂️

    Reviewed in the United States on July 1, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
  • K

    Katie S.

    Purchased on June 15, 2024

    4.8/5

    Buying my new phone was easily a 5/5, but honestly, trading in your phone to this company was a 1/5. I will explain why below. I was trading in my Galaxy Note 20, and yes it did not look the best, but I was HONEST. I selected the options that said it had wear and tear, and selected the option for the screen that said something about "having dead pixels" because it had a VERY TINY area with a dead pixel on it. The original offer was $141, but upon the refurbisher receiving the phone, I was told that it "didn't match the description" and "had a dot on the screen." They counter offered me a whole ONE DOLLAR. It was honestly insulting that you can tell the truth, be told you were wrong, then get that little of an offer. I'd recommend these guys for buying a phone a million times over, but save yourself some time and sell your old phone yourself.

    Reviewed in the United States on July 1, 2024

    Galaxy S21 Ultra 5G 256GB - Black - Unlocked
See all 228 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 S21 Ultra 5G - Unlocked

Galaxy S21 Ultra 5G 256GB - Black Unlocked


Our partners are electronics experts who test and verify that each item is 100% functional before it leaves the workshop. This is the reason you benefit from a minimum 1-year warranty with the purchase of a refurbished device at Back Market.

Galaxy S21 Ultra 5G 256GB - Black - Unlocked

  • Manufacturing part numbers (MPN) : SM-G998UZKEXAA
  • Color : Black
  • Screen size (inches) : 6.8
  • Model : Galaxy S21 Ultra 5G
  • OS : Android
  • Resolution : 1440x3200
  • Carrier compatibility : Unlocked
  • Storage : 256 GB
  • Memory : 12 GB
  • Network : 5G
  • Double SIM : No
  • Manufacturer Ref. : SM-G998U
  • Memory Card Slot : No
  • Verizon compatible : Yes
  • AT&T compatible : Yes
  • T-Mobile compatible : Yes
  • Release Year : 2021
  • Foldable : No
  • SAR head : 0.77
  • SAR body : 1.02
  • Series : Samsung Galaxy S
  • SIM card : Single-SIM + eSIM
  • Color (official name) : Phantom Black
  • Product type : Refurbished
  • Brand : Samsung
  • Weight : 8 oz

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