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Galaxy S21 Ultra 5G 128GB - Black - Locked AT&T

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Galaxy S21 Ultra 5G - Locked AT&T's customer reviews

4.5/5

5 verified reviews in the last 6 months.

  • E

    Eric H.

    Reviewed in the United States on March 5, 2024

    4.9/5
    This is my 3rd purchase from backmartket and I must say, they have never failed to deliver a quality product to me! This phone is in amazing condition it has 1 tiny little scuff on the screen that was maybe ⅛ of an inch long that was super shallow and completely disappeared when I put a screen protector on it!everything else works perfectly and it is a major improvement from my s10 thank your again backmartket I've recommended you to everyone that's said they needed a new phone and plan on purchasing all my tech from you in the foreseeable future if possible
    Galaxy S21 Ultra 5G 128GB - Black - Locked AT&T

    Purchased on February 18, 2024

  • J

    Jesse V.

    Reviewed in the United States on March 16, 2024

    5/5
    fast delivery phone as it should be fast trade in payout 3rd time using back market!! never go back! Great savings love it!!
    Galaxy S21 Ultra 5G 128GB - Black - Locked AT&T

    Purchased on February 26, 2024

  • C

    Charles H.

    Reviewed in the United States on March 2, 2024

    4.5/5
    just received my phone yesterday and I would order again this place is great I will never buy a new phone again I will buy a used from back market
    Galaxy S21 Ultra 5G 128GB - Black - Locked AT&T

    Purchased on February 27, 2024

  • M

    Michael P.

    Reviewed in the United States on February 18, 2024

    4.9/5
    Phone came in early, bought the excellent version. Very few noticeable blemishes. Works as intended. No issues so far. Would definitely recommend.
    Galaxy S21 Ultra 5G 128GB - Black - Locked AT&T

    Purchased on February 3, 2024

  • L

    Leslie C.

    Reviewed in the United States on April 23, 2024

    3/5
    El teléfono no esta desbloqueado. y encima esta con AT& T piden $100 pára hacer el desbloqueo, y en la descripcion del equipo dice que esta desbloqueado. No son especificos con lo que describen.
    Galaxy S21 Ultra 5G 128GB - Black - Locked AT&T

    Purchased on April 9, 2024

See all 5 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 - Locked AT&T

Galaxy S21 Ultra 5G 128GB - Black - Locked US Cellular


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 128GB - Black - Locked AT&T

  • Manufacturing part numbers (MPN) : SM-G988
  • Color : Black
  • Screen size (inches) : 6.8
  • Model : Galaxy S21 Ultra 5G
  • Megapixels : 108
  • OS : Android
  • Resolution : 1440x3200
  • Carrier compatibility : AT&T
  • Storage : 128 GB
  • Memory : 16 GB
  • Network : 5G
  • Double SIM : No
  • Manufacturer Ref. : SM-G998U
  • Memory Card Slot : No
  • Verizon compatible : No
  • AT&T compatible : No
  • T-Mobile compatible : No
  • Release Year : 2021
  • Foldable : No
  • 5G : Yes
  • SAR head : 0.71
  • SAR body : 0.99
  • 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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