

Battery
4.2/5
Shipping
4.3/5
Lens & Camera
4.4/5
Accessories
3.9/5
Packaging
4.3/5
Overall performance
4.3/5
Appearance
4.2/5
Reviewed 5/11/25, United States.
The phone is in great condition. ONE tiny nick in a discreet spot, can't even notice! No scratches on screen or back . Definitely worth the money I spent. Phone works exactly how it suppose to. Another plus was fast shipping. I couldn't be happier.
Galaxy S21 Ultra 5G 256GB - Silver - Locked T-Mobile
Galaxy S21 Ultra 5G 256GB - Silver - Locked T-Mobile
Condition
Good
Purchased
4/28/25
Reviewed 8/17/23, United States.
I'm really happy with the phone, but the Asurian insurance plan is terrible. The screen on my phone cracked within 10 days so I filed a claim with Asurian. I entered all of the info into their system. They acknowledged my claim and asked me to fill in a pdf with all of the same info unless I already provided it. Apparently, they wanted me to provide it again and I only learned that after spending 45 minutes on the phone. They also asked for a copy of the product receipt and insurance receipt. They should have all of this on file. The latest request is for a picture of the front and back of the phone. I wonder what the next hoop is that they want me to jump through. It feels like they are making this difficult on purpose to prevent claims. Also, Back Market is not listed as a retailer with Asurian so it's impossible to get info from them on claim status.
Galaxy S21 Ultra 5G 256GB - Black - Locked T-Mobile
Galaxy S21 Ultra 5G 256GB - Black - Locked T-Mobile
Condition
Fair
Purchased
7/31/23
Reviewed 5/12/25, United States.
Phone said it was in good shape, I would say excellent
Galaxy S21 Ultra 5G 256GB - Silver - Locked T-Mobile
Galaxy S21 Ultra 5G 256GB - Silver - Locked T-Mobile
Condition
Good
Purchased
4/29/25
Reviewed 11/10/24, United States.
Very quick shipping. Product came as described.
Galaxy S21 Ultra 5G 256GB - Black - Locked T-Mobile
Galaxy S21 Ultra 5G 256GB - Black - Locked T-Mobile
Condition
Premium
Purchased
10/28/24
Reviewed 10/29/23, United States.
I purchased a phone advertised as excellent condition and it wasn't!! the top of the screen has a chip and right below it a scratch!!! The bottom of the phone buy speaker and charging port are chipped and scratched...I had no choice but to keep the phone because my previous phone was no longer working...I wasn't going to leave a review but I think you should know that it wasn't in excellent condition but phone is in good working condition everything works as it should...Thanks Nick
Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
Condition
Excellent
Purchased
10/15/23
Reviewed 9/25/23, United States.
Phone is in terrible shape considering this is considered "good." It has several scratches on the screen. Some are so deep I can feel them with my fingernail. USB-C port looks to be in bad shape too. Didn't even try turning it on. Very disappointed.
Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
Condition
Good
Purchased
9/21/23
Reviewed 9/3/23, United States.
In better than new condition
Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
Condition
Excellent
Purchased
8/22/23
2021Release Year
8 ozWeight
USB-CConnector
SM-G998UManufacturer Ref.
6.8Screen size (inches)
256 GBStorage
SamsungBrand
NoFoldable
SilverColor
The Samsung Galaxy S21 Ultra 5G remains a flagship-level smartphone despite being released in early 2021. It offers a large, vibrant display and a versatile camera system that caters to users who demand high-end features and performance in a premium design.
Key features:The Galaxy S21 Ultra 5G is well suited for professionals, content creators, and tech enthusiasts who require a large, high-resolution screen and advanced photography capabilities. Its powerful processor and extensive camera setup make it a strong choice for multitasking and mobile photography. Users looking for the latest software updates should note it launched with Android 11 but supports upgrades. Compared to newer models like the Galaxy S22 Ultra, it may lack some incremental improvements but remains highly capable.
Pros & Cons: Pros Cons Large, vibrant 120Hz AMOLED display ideal for media consumption and gaming. Bulky and heavy design may not suit all users. Versatile quad-camera system with high-resolution and zoom capabilities. Initial OS version Android 11, requiring updates for latest features. 5G connectivity ensures compatibility with modern networks. No expandable storage option available.Choosing a refurbished Samsung Galaxy S21 Ultra 5G supports sustainability by extending the life of a premium device. Back Market ensures all devices go through thorough testing and quality checks to guarantee reliable performance. Learn more about our quality standards.




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