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Galaxy S21+ 5G 128GB - Black - Locked AT&T

$168.00
before trade-in
Save $831.00

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Free delivery by Jul 22 - Jul 23
Express delivery by Jul 21 - Jul 22 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+ 5G 128GB - Black - Locked AT&T
Galaxy S21+ 5G • Locked AT&T
Fair128 GBBlack
$168.00
before trade-in
Save $831.00

Proudly refurbished by Electrodealz IncUS

Free delivery by Jul 22 - Jul 23
Express delivery by Jul 21 - Jul 22 from $15.00

Comes with

Compatible charging cable

Galaxy S21+ 5G 128GB - Black - Locked AT&T's customer reviews

10 verified reviews in the last 24 months.

  • H

    Harden K.

    Purchased on July 21, 2023

    Verified purchase

    This is the 2nd purchase my wife and I have made from Back Market. Both phones we purchased in excellent condition have shown up with 3 days in perfect shape. You wouldn't know by looking at them that they aren't brand new. Highly recommend!!!

    Item

    Galaxy S21+ 5G 128GB - Black - Locked AT&T

    Condition

    Excellent

    Reviewed in the United States on August 6, 2023

  • E

    Elijah S.

    Purchased on November 20, 2023

    Verified purchase

    Came in condition listed, light scratching on the screen which is not noticeable unless under the right light.

    Item

    Galaxy S21+ 5G 128GB - Black - Locked AT&T

    Condition

    Fair

    Reviewed in the United States on December 1, 2023

  • C

    Chris M.

    Purchased on February 24, 2025

    Verified purchase

    phone was on great condition

    Item

    Galaxy S21+ 5G 128GB - Black - Locked AT&T

    Condition

    Good

    Reviewed in the United States on March 10, 2025

  • C

    Carl P.

    Purchased on January 29, 2025

    Verified purchase

    Still learning about this phone but very pleased at this time.

    Item

    Galaxy S21+ 5G 128GB - Black - Locked AT&T

    Condition

    Fair

    Reviewed in the United States on February 16, 2025

  • U

    Umesh K.

    Purchased on February 27, 2024

    Verified purchase

    It’s works perfect I’m very sati

    Item

    Galaxy S21+ 5G 128GB - Black - Locked AT&T

    Condition

    Fair

    Reviewed in the United States on March 11, 2024

  • M

    Maranatha S.

    Purchased on December 16, 2024

    Verified purchase

    The fingerprint recognition is flawed. Unless I moisten my finger and press really hard, the screen rejects my fingerprint. Other than that the phone is fine.

    Item

    Galaxy S21+ 5G 128GB - Silver - Locked AT&T

    Condition

    Excellent

    Reviewed in the United States on January 1, 2025

  • C

    Cyndi M.

    Purchased on July 21, 2023

    Verified purchase

    Service couldn't be better.

    Item

    Galaxy S21+ 5G 256GB - Black - Locked AT&T

    Condition

    Excellent

    Reviewed in the United States on August 15, 2023

See all 10 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+ 5G 128GB - Black - Locked AT&T

  • SM-G996UManufacturing part numbers (MPN)

  • BlackColor

  • 6.7Screen size (inches)

  • Galaxy S21+ 5GModel

  • AndroidOS

  • 1080 x 2400Resolution

  • USB-CConnector

  • AT&TCarrier compatibility

  • 128 GBStorage

The Galaxy S21+ 5G is a mid-range flagship from Samsung, offering solid performance and 5G connectivity. This model is locked to AT&T and comes with 128GB of storage, making it suitable for users who need a reliable device for everyday tasks and moderate app use. It is three generations old but still performs well for most daily activities.

Key features:
  • Display: 6.7-inch Dynamic AMOLED 2X with FHD+ resolution
  • Processor: Exynos 2100 (Global) or Snapdragon 888 (USA)
  • Camera: Triple rear cameras with 12MP wide, 12MP ultra-wide, and 64MP telephoto lenses
  • Connectivity: 5G capable for faster data speeds
  • Storage: 128GB internal storage
Who is this for?

The Galaxy S21+ 5G is ideal for users seeking a large, vibrant display for media consumption, casual photography, and reliable 5G connectivity. It’s well-suited for those who prefer a locked device with ample storage for apps and media, especially if they are AT&T customers.

Pros & Cons:
Pros Cons
Large, vibrant display suitable for media viewing. Locked to AT&T, limiting carrier flexibility.
5G connectivity for faster data speeds. Older model which may lack some latest features.

Why refurbished?

Choosing a refurbished Galaxy S21+ 5G provides a cost-effective way to access a high-quality device with modern features. Each device from Back Market undergoes thorough testing to meet quality standards. Learn more about our quality standards.

Galaxy S21+ 5G 128GB - Black - Locked AT&T
Manufacturing part numbers (MPN)SM-G996U
ColorBlack
Screen size (inches)6.7
ModelGalaxy S21+ 5G
OSAndroid
Resolution1080 x 2400
ConnectorUSB-C
Carrier compatibilityAT&T
Storage128 GB
Memory8 GB
Screen typeDynamic AMOLED 2X
Network5G
Manufacturer Ref.SM-G996U
Memory Card SlotNo
Verizon compatibleNo
AT&T compatibleYes
T-Mobile compatibleNo
Last OS CompatibilityYes
FoldableNo
Front camera10 megapixels
SAR head0.65
SAR body0.95
SeriesSamsung Galaxy S
SIM cardPhysical SIM + eSIM
Retro techNo
Main camera12 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
Weight7 oz

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