Galaxy S21 Ultra 5G 256GB - Black - Locked T-Mobile

Customer reviews for Galaxy S21 Ultra 5G • Locked T-Mobile

Overall rating

74 verified reviews

Rating details

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

Reviews

Lani B.
Verified purchase
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
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
4/28/25
Scott H.
Verified purchase
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
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
7/31/23
Tanya B.
Verified purchase
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
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
4/29/25
Kevin P.
Verified purchase
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
Close to perfection. The body may have tiny micro-scratches. For items with screens, the screen will be flawless.
Purchased
10/28/24
Nicolo C.
Verified purchase
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
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
10/15/23
Armando R.
Verified purchase
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
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
9/21/23
Gary C.
Verified purchase
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
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
8/22/23

Everything you ever wanted to know about the Galaxy S21 Ultra 5G • Locked T-Mobile

Durability
Overall performance
Camera
Screen quality

12 GBMemory (GB)
Samsung Galaxy SSerie
Physical SIM + eSIMSIM card
2021Release Year
40 megapixelsFront camera
BlackColor
8 ozWeight
SM-G998UManufacturer Ref.
T-MobileCarrier compatibility

The Samsung Galaxy S21 Ultra 5G remains a powerful flagship device since its release in early 2021. Known for its large, vibrant display and versatile camera system, it continues to meet the demands of users who prioritize multimedia, photography, and high-end performance.

Key features:

Release Date: January 2021
Display: 6.8-inch Dynamic AMOLED 2X, QHD+ resolution, 120Hz refresh rate
Processor: Exynos 2100 (Global) / Snapdragon 888 (USA)
Camera: Quad rear cameras: 108MP wide, 12MP periscope telephoto, 10MP telephoto, 12MP ultra-wide
Connectivity: 5G compatible for fast network speeds
Operating System: Ships with Android 11, upgradable to newer versions

Who is this for?

The Galaxy S21 Ultra 5G is suited for users who need a large, high-resolution screen and advanced photography capabilities. It’s ideal for professionals, content creators, and tech enthusiasts who want a device capable of handling intensive tasks and multimedia consumption. Compared to the Galaxy S21 and S21+, the Ultra model offers superior camera versatility and display quality.

Pros & Cons: Pros Cons High-resolution 120Hz AMOLED display ideal for media and gaming. Large size and weight may be less comfortable for one-handed use. Versatile quad-camera setup with strong zoom capabilities. No microSD card slot for expandable storage. 5G connectivity supports fast network speeds. Locked to T-Mobile which limits carrier flexibility.
Why refurbished?

Choosing a refurbished Samsung Galaxy S21 Ultra 5G supports sustainable consumption by extending the device’s lifecycle. Back Market ensures all refurbished devices meet strict quality standards through comprehensive testing and certification. Learn more about our quality standards.

Memory (GB): 12 GB
Serie: Samsung Galaxy S
SIM card: Physical SIM + eSIM
Release Year: 2021
Front camera: 40 megapixels
Color: Black
Weight: 8 oz
Manufacturer Ref.: SM-G998U
Carrier compatibility: T-Mobile
Model: Galaxy S21 Ultra 5G
Foldable: No
Last OS Compatibility: Yes
Screen type: Dynamic AMOLED 2X
Brand: Samsung
SAR body: 1.02
Color (official name): Phantom Black
Network: 5G
Screen size (inches): 6.8
Connector: USB-C
Main camera: 108 megapixels
Memory Card Slot: No
SAR head: 0.77
Resolution: 1440 x 3200
Storage: 256 GB
OS: Android

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Galaxy S21 Ultra 5G 256GB - Black - Locked T-Mobile

Customer reviews for Galaxy S21 Ultra 5G • Locked T-Mobile

Overall rating

Rating details

Reviews

Reviews

Lani B.

Scott H.

Tanya B.

Kevin P.

Nicolo C.

Armando R.

Gary C.

Popular searches

Everything you ever wanted to know about the Galaxy S21 Ultra 5G • Locked T-Mobile

Durability

Overall performance

Camera

Screen quality

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