Galaxy S21 Ultra 5G AT&T 256 GB - Phantom Titanium

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  • Galaxy S21 Ultra 5G AT&T
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Renewed and sold by rdx cellular inc

Refurbisher since 2021, location: United-States

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


262 verified reviews in the last 6 months.


Lawrence W.


Reviewed in United States on December 29, 2022

Was kind of worried about a refurbished phone.Ordered the Samsung S21 ultra in very good condition. It came in 3 days. To my surprise it was in excellent condition. Stuck in sim card and fired it up and is running like a champ.Back market you have me as a customer forever.

Purchased on the December 17, 2022


Chris D.


Reviewed in United States on November 17, 2022

Phone is basically brand new. Which i did get in excellent condition and it shows it is. Doesn't even look like a refurbished phone. Connected to my service once we got it all figured out. Will definitely come back here for upgrades. 10/10.

Purchased on the November 3, 2022


Phyllis H.


Reviewed in United States on January 7, 2023

Nothing short of awesome ! I wasn’t expecting such a nice phone when I purchased a refurbished one, but to my joy I was shocked. Delivery was very fast. Thank you Back Market, you made everything so easy !

Purchased on the December 24, 2022


Randy T.


Reviewed in United States on August 27, 2022

The phone functioned with the exception that it would not recognize the SIM. It was like new cosmetically. This is the 2nd phone that did not work with ATT. Nobody was able to help to make either of them work. The refund was timely both times. I have given up on refurbished phones though. I bought a new one instead from ATT that worked out of the box and with a trade in I spent 1/3 as much for a newer phone.

Purchased on the August 11, 2022


Jason T.


Reviewed in United States on January 5, 2023

Got exactly what I ordered!! No hassle easy to set up! Perfect condition screen, only wear was a TINY TINY TINY scratch on the corner of the hosuing, as I plan to use a case this is not a problem whatsoever, also it IS a refurbished product with that in mind nothing could have gone better it even got here earlier than backmarkets estimate!

Purchased on the January 1, 2023


Jill A.


Reviewed in United States on January 6, 2023

The s21 ultra was received in brand new condition for being a refurbished phone. I have purchased many phones and earbuds from back market and will never do business with anyone else but them. You will never be disappointed and you will get the best deal here...

Purchased on the December 22, 2022


Norma L.


Reviewed in United States on December 21, 2022

Galaxy S21 Ultra 5G 128GB - Phantom Silver - Fully unlocked (GSM & CDMA) was received in EXCELLENT condition. Transferred photos and data from Samsung J7V (Verizon) using Samsung app Smart Switch. Then transferred the SIM card from J7V to S21. Seamless. The S21 had 80% charge. The phone was clean and absolutely pristine in condition. Not particularly crazy about the color, but planned to use an opaque phone case anyway. I reviewed the various online vendors prior to purchase and selected BlackMarket. I never used this manner of cellphone purchase but rather used Verizon (carrier for 20+ years). BlackMarket is by far the better way to purchase a cellphone. The cost of my NEW S21Ultra through BlackMarket is equivalent to a Verizon purchase of a Google Pixel 6a. I am very happy I broke the Verizon purchase cycle. Highly recommend BlackMarket.

Purchased on the November 8, 2022

See all 262 reviews

Renewed vs. brand new

Here’s what you help prevent, on average, by choosing a renewed 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 AT&T

Galaxy S21 Ultra 5G 256GB - Phantom Titanium - Locked AT&T

Our partners are electronics experts who test and verify that each product is 100% functional before it leaves the factory. 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 - 256 GB - Phantom Titanium

  • Screen size (inches) : 6.8
  • Is the phone Unlocked or tied to a carrier? : AT&T
  • Sim Card Format : Nano
  • Storage : 256 GB
  • Memory : 12 GB
  • Model : Galaxy S21 Ultra 5G
  • eSIM : Yes
  • Processor brand : Qualcomm
  • Processor Core : 8
  • Megapixels : 108
  • OS : Android
  • Resolution : 1440 x 3200
  • Foldable : No
  • Screen type : Dynamic AMOLED 2X
  • Connector : USB-C
  • Network : GSM
  • Release Date : January 2021
  • Double SIM : No
  • Manufacturer Ref. : SM-G998U1
  • 5G : Yes
  • Color : Phantom Titanium
  • Verizon compatible : No
  • AT&T compatible : Yes
  • T-Mobile compatible : No
  • Sprint Compatible : No
  • U.S. Cellular compatible : No
  • Release Year : 2021
  • Memory Card Slot : No
  • SAR head : 0.77
  • SAR body : 1.02
  • Dual SIM : Single-SIM + eSIM
  • Brand : Samsung
  • Weight : 8 oz

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