Terms apply
Proudly refurbished by Cellfeee
Comes with
Compatible charging cable
344 verified reviews in the last 12 months.
Michael t W.
Purchased on September 11, 2024
This is my fourth phone Ive gotten from backmarket!! WHY? Because searching the net up and down ..Backmarket alwasy seemed tpo have the best deal.One big reason is the first two had clear new screens and the phone was refurbished.This time i got a galaxy s21..It is brand new looking..Super good phone.Super happy-PEACE
Reviewed in the United States on December 9, 2024
Geraldine M.
Purchased on January 23, 2025
The Galaxy S21 Ultra 5G 128G Black is a nice phone. It had one slight scratch although the description said Excellent Condition with no visible marks. Both phones had visible marks. We liked the phone in spite of this.
Reviewed in the United States on February 10, 2025
Gerald P.
Purchased on March 10, 2024
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 December 9, 2024
Shawn N.
Purchased on May 20, 2024
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 December 9, 2024
Gene B.
Purchased on February 29, 2024
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 December 9, 2024
Kyle M.
Purchased on May 27, 2024
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 December 9, 2024
La mar R.
Purchased on June 29, 2024
Love the phone, and the seller is A+++!! Thank you so much Note: phone is refurbished, and won't seem to connect to 5G. Not sure if that was the previous issue, but 4GLTE is just as good. Love this phone!
Reviewed in the United States on December 9, 2024
Here’s what you help prevent on average by choosing a reborn smartphone over a brand new one.
That's like driving an SUV from NYC to Chicago.
That’s around the weight of a baseball.
That's like 20 dogs digging in your yard for a week.
That's like running a faucet for 3 days
SM-G998UZKAXAAManufacturing part numbers (MPN)
BlackColor
6.8Screen size (inches)
Galaxy S21 Ultra 5GModel
AndroidOS
1440 x 3200Resolution
USB-CConnector
UnlockedCarrier compatibility
128 GBStorage
Galaxy S21 Ultra 5G 128GB - Phantom black - Unlocked
Manufacturing part numbers (MPN) | SM-G998UZKAXAA |
Color | Black |
Screen size (inches) | 6.8 |
Model | Galaxy S21 Ultra 5G |
OS | Android |
Resolution | 1440 x 3200 |
Connector | USB-C |
Carrier compatibility | Unlocked |
Storage | 128 GB |
Memory | 12 GB |
Screen type | Dynamic AMOLED 2X |
Network | 5G |
Manufacturer Ref. | SM-G998U1 |
Memory Card Slot | No |
Verizon compatible | Yes |
AT&T compatible | Yes |
T-Mobile compatible | Yes |
Release Year | 2021 |
Last OS Compatibility | Yes |
Foldable | No |
Front camera | 40 megapixels |
SAR head | 0.77 |
SAR body | 1.02 |
Series | Samsung Galaxy S |
SIM card | Physical SIM + eSIM |
Retro tech | No |
Main camera | 108 megapixels |
Color (official name) | Phantom Black |
matching_key | Galaxy S21 Ultra 5G Phantom Black 128 12 Physical SIM + eSIM Unlocked |
Company name | Samsung Electronics |
Company email address | support@samsung.com |
Company postal address | Samsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK |
Brand | Samsung |
Weight | 8 oz |
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