Best picks
Condition
SIM card
Comes with
For you? Only the best.
- 70% less vs. new
- Free delivery by Oct 5 - Oct 6
- Express delivery by Oct 4 - Oct 5 from $25.00
- Refurbished tech can help reduce e-waste, more than you think.
Refurbished and sold by Cellfeee
Live on Back Market since 2020
Accepts
Often bought together
Galaxy S21 Ultra 5G - Unlocked's customer reviews
451 verified reviews in the last 6 months.
Filter by stars
- 100%
- 0%
- 0%
- 0%
- 0%
- S
Shawn C.
5/5Reviewed in the United States on July 11, 2023
I'm Really happy with my Samsung galaxy S21 ultra 5G! I really like the screen size, how fast it operates and the long battery life! I'll definitely recommend Back Market to anyone looking for a really good refurbished phone!Galaxy S21 Ultra 5G 128GB - Phantom Black - UnlockedPurchased on July 4, 2023
- E
Elijah P.
4.4/5Reviewed in the United States on April 26, 2023
Definitely a great pickup. Was hesitant because I know refurbished products are never as good as new but this phone seems to put that claim to rest. I did order the fun in very good condition, however. It has only been 2 weeks, but the Samsung Galaxy S21 Ultra has been good to me.Galaxy S21 Ultra 5G 256GB - Phantom Silver - UnlockedPurchased on April 13, 2023
- D
David G.
5/5Reviewed in the United States on July 24, 2023
Top notch product! Excellent value, service, price and quality! I love BM their service is the best and the refurbished S21 ultra is amazing!! Thank you guys for helping the environment and saving your customers hundreds of dollars, I almost can't wait to buy another phone!Galaxy S21 Ultra 5G 128GB - Phantom Black - UnlockedPurchased on July 19, 2023
- A
Antonio E.
5/5Reviewed in the United States on August 1, 2023
I extend my sincere appreciation for the refurbished Galaxy S21 Ultra you kindly provided. Your generosity has not only offered a practical and functional device but also showcased your thoughtfulness. This gesture demonstrates your understanding of my needs and financial constraints, making it all the more special. The fact that you took the time to ensure the phone's quality and usability speaks volumes about your care and consideration. I am truly grateful for this invaluable gift, as it not only enables me to stay connected but also serves as a reminder of your kindness. Your selfless act has touched me deeply, and I am humbled by your generosity. Thank you for making a positive impact on my life and brightening my days with your thoughtfulness.Galaxy S21 Ultra 5G 128GB - Phantom Black - UnlockedPurchased on July 17, 2023
- R
Roy S.
5/5Reviewed in the United States on August 6, 2023
omg l received my phone in only a couple of days. it was listed as excellent condition they did not lie. wow awesome condition absolutely flawless.l am so happy got my phone number added in minutes. no faults to be reported. very happy with backmarket and this refurbisher. way to goGalaxy S21 Ultra 5G 128GB - Phantom Black - UnlockedPurchased on July 30, 2023
- J
Jonathan T.
5/5Reviewed in the United States on June 11, 2023
Definitely had some doubts buying a refurbished phone, but I'm glad I ordered one. Needed to upgrade from a note 9. The s21 Ultra I ordered was actually super clean and nice. Even for good condition, I was basically like new. Works really great and fast. Battery last actually long. Super happy with the purchase.Galaxy S21 Ultra 5G 256GB - Phantom Black - UnlockedPurchased on May 25, 2023
- T
Troy C.
4.3/5Reviewed in the United States on May 15, 2023
Awesome phone. If this was refurbished, I couldn’t see one single nick or scratch. The phone works beautifully. I thought you guys were a scam at first, due to your super low prices, but I will shop here for tech goods and no where else again. You guys are fantastic. Thank you so much. AustinGalaxy S21 Ultra 5G 128GB - Phantom Black - Locked VerizonPurchased on April 25, 2023
Popular searches
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 128GB - Phantom Silver - Unlocked
Galaxy S21 Ultra 5G 128GB - Phantom Silver 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 128GB - Phantom Silver - Unlocked
- Manufacturing part numbers (MPN) : SM-G998UZSAXAA
- Screen size (inches) : 6.8
- Carrier compatibility : Unlocked
- Storage : 128 GB
- Model : Galaxy S21 Ultra 5G
- Megapixels : 3200x1440
- OS : Android
- Color : Phantom Silver
- Memory : 12 GB
- Foldable : No
- Network : GSM/CDMA + 5G
- Double SIM : No
- Manufacturer Ref. : SM-G998U
- 5G : Yes
- Verizon compatible : Yes
- AT&T compatible : Yes
- T-Mobile compatible : Yes
- Release Year : 2021
- Memory Card Slot : No
- SAR head : 0.77
- SAR body : 1.02
- SIM card : Single-SIM + eSIM
- Brand : Samsung
- Weight : 8 oz
Welcome to Back Market
The best prices for high-quality reborn tech by sellers we’ve checked and vetted. We don’t mind if you Google us .
- Pay over Time.
- 30-day returns
- Free standard shipping
- 1-year warranty
