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Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile

$279.00
before trade-in
Save $1,221.00

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Buy now, pay later.

Free delivery by Jul 23 - Jul 24
Express delivery by Jul 22 - Jul 23 from $15.00

All devices are restored professionally based on a 25-point inspection

  • Buttons
  • SIM/memory card reader
  • Data deletion
  • Chargers/cables
  • Unlocked by previous owner
  • GPS/positioning system
  • Cameras
  • External sensors
  • Biometric sensors
  • Wi-Fi and Bluetooth
  • IMEI serial number
  • Water damage
  • Flash and indicator lights
  • Mics and speakers
  • Input and output ports
  • Phone carrier
  • Battery health
  • Mechanical parts
  • Parts compatibility
  • Screen
  • Other features specific to this device

Go unlimited for 20% less.

This phone comes with an offer for unlimited premium 5G data on Verizon’s network for $20/month for 2 years. That’s a total savings of $120 with no strings attached.

Terms apply

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Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
Galaxy S21 Ultra 5G • Locked T-Mobile
Good128 GBBlack
$279.00
before trade-in
Save $1,221.00

Proudly refurbished by ThePhoneStoreCoUS

Free delivery by Jul 23 - Jul 24
Express delivery by Jul 22 - Jul 23 from $15.00

Comes with

Compatible charging cable

Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile's customer reviews

13 verified reviews in the last 24 months.

  • L

    Lani B.

    Purchased on April 28, 2025

    Verified purchase

    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.

    Item

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

    Condition

    Good

    Reviewed in the United States on May 11, 2025

  • S

    Scott H.

    Purchased on July 31, 2023

    Verified purchase

    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.

    Item

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

    Condition

    Fair

    Reviewed in the United States on August 17, 2023

  • T

    Tanya B.

    Purchased on April 29, 2025

    Verified purchase

    Phone said it was in good shape, I would say excellent

    Item

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

    Condition

    Good

    Reviewed in the United States on May 12, 2025

  • K

    Kevin P.

    Purchased on October 28, 2024

    Verified purchase

    Very quick shipping. Product came as described.

    Item

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

    Condition

    Premium

    Reviewed in the United States on November 10, 2024

  • R

    Rodriguez B.

    Purchased on October 17, 2023

    Verified purchase

    Great phone for a great price

    Item

    Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile

    Condition

    Good

    Reviewed in the United States on October 29, 2023

  • L

    Lee M.

    Purchased on September 28, 2023

    Verified purchase

    I really like this phone still getting to learn all of the features.

    Item

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

    Condition

    Excellent

    Reviewed in the United States on October 8, 2023

  • G

    Gary C.

    Purchased on August 22, 2023

    Verified purchase

    In better than new condition

    Item

    Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile

    Condition

    Excellent

    Reviewed in the United States on September 3, 2023

See all 13 reviews

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 - Black - Locked T-Mobile

  • BlackColor

  • 6.8Screen size (inches)

  • Galaxy S21 Ultra 5GModel

  • AndroidOS

  • 1440 x 3200Resolution

  • USB-CConnector

  • T-MobileCarrier compatibility

  • 128 GBStorage

  • 12 GBMemory

Galaxy S21 Ultra 5G 128GB - Phantom Black T-Mobile
Galaxy S21 Ultra 5G 128GB - Black - Locked T-Mobile
ColorBlack
Screen size (inches)6.8
ModelGalaxy S21 Ultra 5G
OSAndroid
Resolution1440 x 3200
ConnectorUSB-C
Carrier compatibilityT-Mobile
Storage128 GB
Memory12 GB
Screen typeDynamic AMOLED 2X
Network5G
Manufacturer Ref.SM-G998U
Memory Card SlotNo
Verizon compatibleNo
AT&T compatibleNo
T-Mobile compatibleYes
Last OS CompatibilityYes
FoldableNo
Front camera40 megapixels
SAR head0.77
SAR body1.02
SeriesSamsung Galaxy S
SIM cardPhysical SIM + eSIM
Retro techNo
Main camera108 megapixels
Color (official name)Phantom Black
Release Year2021
Company nameSamsung Electronics
Company email addresssupport@samsung.com
Company postal addressSamsung House, 1000 Hillswood Drive, Chertsey, Surrey, KT16 0PS, UK
BrandSamsung
Weight8 oz

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