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SAMSUNG

Samsung Electronics Samsung Galaxy S21 Ultra 5G | Factory Unlocked Android Cell Phone | US Version 5G Smartphone | Pro-Grade Camera, 108MP High Res | 128GB, Black (SM-G998UZKAXAA) (Renewed)

  • Based on 366 reviews
Condition: Refurbished - Excellent
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Availability: Only 1 left in stock, order soon!
Fulfilled by WirelessSource
Arrives Monday, Sep 15
Order within 9 minutes
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Features

  • Item Package Dimension- 6.4L X 5.4W X 2H Inches
  • Item Package Weight - 0.78925489796 Pounds
  • Item Package Quantity - 1
  • Product Type - Cellular Phone

Description

This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon- qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.

Brand: SAMSUNG


Operating System: Android


CPU Model: Snapdragon


Memory Storage Capacity: 128 GB


Screen Size: 6.8 Inches


Resolution: 3200 x 1440


Refresh Rate: 120 hertz


Model Name: Galaxy S21 Ultra 5G


Wireless Carrier: Unlocked


Cellular Technology: 5G


Product Dimensions: 10 x 7 x 3 inches


Item Weight: 13.1 ounces


Item model number: SM-G998UZKAXAA


OS: Android


RAM: 12 GB


Wireless communication technologies: Cellular


Connectivity technologies: Wireless


GPS: True


Special features: Bluetooth Enabled, Expandable Memory, LTE, Water Resistant, Wireless Charging


Other display features: Wireless


Human Interface Input: Touchscreen


Scanner Resolution: 3200 x 1440


Other camera features: Front


Audio Jack: No headphone jack


Form Factor: Smartphone


Color: Black


Battery Power Rating: 5000


Phone Talk Time: 40 Hours


Whats in the box: Charger, USB Cable


Manufacturer: Samsung Electronics


Date First Available: February 1, 2021


Memory Storage Capacity: 128 GB


Standing screen display size: 6.8 Inches


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 15

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Didn't have to spend full retail!
Worked perfectly as a replacement t pho e for my son. Samsung is a great product that lasts. Didn't have to break the bank to get a quality product.
Reviewed in the United States on August 17, 2025 by Steve Mueller
    • The purchased a S21 Ultra "renewed" and received almost brand new (mint condition)
The S21 ultra unlocked phone I received as described, mints condition no scratches and look brand new. The phone has many feature and updated to Android 14 for now. Thank you
Reviewed in the United States on July 28, 2025 by Town By The lake
    • Looks Great, Runs Hot: What You Need to Know Before Buying
What You Should Know Before Buying This Phone: I recently bought this phone, and at first glance, it looked amazing—seriously, it had that fresh-out-the-box shine. The physical condition was actually pretty solid, so props there. But here’s what you need to know if you're thinking about buying it: Palm swipe doesn’t work—not a huge deal for everyone, but worth mentioning. The phone overheats heavily, even with minimal usage. That was the first red flag. Within a week, I started seeing dead pixels forming on the screen. The screen is a cheap LCD replacement, not the original OLED. That said, the seller isn’t necessarily lying—they don’t exactly advertise it clearly, but they’re also not claiming it’s OLED. The brightness is terrible, and it degraded quickly. Within days, black spots appeared, and the screen looked worse in both cold and warm environments. I got multiple humidity warnings, even when indoors, which means the internal seals are probably shot. A battery replacement is highly recommended. It feels like the one in there now is either worn or aftermarket. If you're not super tech-savvy, a lot of this might fly under the radar until it's too late. So if you’re still planning to buy from this seller, I suggest you budget for a genuine OLED screen, fresh seals, and a battery swap. Bottom line: it’s in good condition on the outside, but the inside is a different story. Just know what you’re getting into. ... show more
Reviewed in the United States on July 12, 2025 by since kid
    • Samsung galaxy
Excellent product, 10/10
Reviewed in the United States on July 22, 2025 by Alexander Espinoza
    • refurbished S 21 Ultra Samsung
Love the ease that the pone effortlessly snagged all of my information from my S 9 - was shocked to see that the sellers or who ever did not put a SIM card in the thing so I can't make calls until i get the SIM card. But, nice phone.
Reviewed in the United States on January 16, 2025 by David B.
    • Husband is happy!!
Husband is so happy with his new phone!!
Reviewed in the United States on July 31, 2025 by Tammy & Michael Tyssen
    • Funciona perfectamente y en un buen precio
No está tan mal, funciona perfectamente
Reviewed in the United States on July 30, 2025 by Juan Perez
    • Avoid. Go to your provider for a refurbished phone. Last less than 1 yr.
Go directly to your provider vs risk an unknown quality refurbished. This phone was bought in August. Its May. So 9 months for $300. Since yesterday network failures off and on for days, now not on again. Four trips to Verizon with even an Esim card installed, network reset, updates are current, nothing. Blutooth no longer connects. When this does work the network cuts off in my own home and office. I would go directly to your provider and see if they have a refurbished option. I would not trust some one unknown on Amazon claiming quality checks. I am told by tech support and the stores, its the phone. They have tried everything. Its the phone is crap. Also noteworthy, once the short term warranty expired the phone body began crumbling. I noticed when I tried to put a new hard case on. Now I can't take this hard case off because the actual phone body is crumbling in chunks. So the phone body lasted 4 months before it began to crumble. ... show more
Reviewed in the United States on May 8, 2025 by Aaron E Ayres

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