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Samsung

Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black- for CDMA Carriers (Renewed)

  • Based on 2,278 reviews
Condition: Refurbished - Excellent
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Availability: 20 left in stock
Fulfilled by cell4less
Arrives Monday, Nov 17
Order within 13 hours and 32 minutes
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Service provider: CDMA Carriers


Color: Phantom Black


Size: 128GB


Features

  • Pro Grade Camera: Zoom in close, take photos and videos like a pro, and capture incredible share-ready moments with our easy-to-use, multi lens camera
  • Sharp 8K Video: Capture your lifes best moments in head-turning, super-smooth 8K video that gives your movies that cinema-style quality Multiple Ways to Record: Create share-ready videos and GIFs on the spot with multi-cam recording and automatic professional-style effects
  • 100x Zoom: Get amazing clarity with a dual lens combo of 3x and 10x optical zoom, or go even further with our revolutionary 100x Space Zoom Highest Smartphone Resolution: Crystal clear 108MP allows you to pinch, crop and zoom in on your photos to see tiny, unexpected details, while lightning-fast Laser Focus keeps your focal point clear
  • All Day Intelligent Battery: Intuitively manages your cellphones usage to conserve energy, so you can go all day without charging

Description

Unleash a new era of mobile supremacy with the Samsung Galaxy S21 Ultra 5G SM-G998U, where innovation meets unmatched excellence. Dive into an immersive visual extravaganza on its expansive display, captivating your senses with vibrant details and stunning colors. Elevate your photography game with an advanced camera system that turns every moment into a visual masterpiece with extraordinary precision. Powered by a formidable processor, this device ensures a seamless and responsive performance, effortlessly adapting to your dynamic lifestyle. The Galaxy S21 Ultra 5G keeps you powered throughout your day, while intuitive features enhance your daily tasks. Immerse yourself in the Samsung ecosystem, offering a seamless interface and unlocking a plethora of functionalities. This sleek and resilient companion goes beyond being a mere phone; it's a symbol of Samsung's commitment to delivering an unparalleled smartphone experience. Redefine your mobile journey and indulge in the extraordinary with the Samsung Galaxy S21 Ultra 5G SM-G998U — where cutting-edge innovation meets an unprecedented level of excellence.

Brand: Samsung


Operating System: Android


Ram Memory Installed Size: 12 GB


CPU Model: Snapdragon


CPU Speed: 2.42 GHz


Memory Storage Capacity: 128 GB


Screen Size: 6.8 Inches


Resolution: 1440 x 3200


Refresh Rate: 120 hertz


Model Name: Galaxy S21 Ultra 5G


Product Dimensions: 6.5 x 2.98 x 0.35 inches


Item Weight: 11.6 ounces


Item model number: Galaxy S21 Ultra 5G


Batteries: 1 Lithium Ion batteries required. (included)


OS: Android


RAM: 1 GB


Wireless communication technologies: Cellular


Connectivity technologies: Wi-Fi


GPS: True


Other display features: Wireless


Human Interface Input: Touchscreen


Scanner Resolution: 1440 x 3200


Other camera features: Front


Audio Jack: 3.5 mm


Form Factor: Smartphone


Color: Phantom Black


Battery Power Rating: 5000 Milliamp Hours


Phone Talk Time: 4 Hours


Whats in the box: Data Cable, SIM Tray Ejector


Manufacturer: Samsung


Date First Available: April 22, 2021


Memory Storage Capacity: 128 GB


Standing screen display size: 6.8 Inches


Ram Memory Installed Size: 12 GB


Battery Capacity: 5000 Milliamp Hours


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 17

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
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  • 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

    • Samsung Galaxy S21 Ultra 5G
I absolutely love my Samsung Galaxy S21 Ultra 5G! The screen is super clear and smooth, and everything runs so fast. The camera quality is amazing—photos come out sharp, even when zoomed in. Battery lasts me all day with no problem, and I’m impressed with how strong the 5G connection is. Definitely worth it if you want a powerful phone that looks and feels premium. ... show more
Reviewed in the United States on September 25, 2025 by Sashana Sewell
    • Works with T-Mobile
Great Phone! Wide 6.8 screen. Love it! I got refurbished for less price and looks good as new. I dont need brand new. Technology pass by pretty quick. Some few ultra minor cosmetic issue at bottom sides that can hardly be seen 12 inches away. It was covered completely when I installed the cover case. No scratches on the screen. 5 Star Overall rating! This is the screen protector I bought for this this phone: TAURI [2+2 Pack Designed for Samsung Galaxy S21 Ultra 5G 6.8 - inch, 2 Pack Flexible TPU Screen Protector + 2 Pack Camera Lens Protector Support Fingerprint Unlock Easy Installation Bubble Free This is the case I bought for this phone:ESR Clear Case Compatible with Samsung Galaxy S21 Ultra (2021), Slim, Soft, and Flexible Transparent Polymer Case, Clear - 6.8 inches ... show more
Reviewed in the United States on September 3, 2023 by BongCoy
    • First and LAST time i will ever buy a refurbished device
I was very apprehensive about buying a refurbished phone but after reading so many 5 star reviews i pulled the trigger. The first one i got looked brand new cosmetically but any time i would go to charge it it said there was "Water in the charging port" and wouldn't let me charge the phone (there was no water anywhere near the phone, let alone in the charging port). That kept happening until i returned it for another one. This one (got it in March of 2023) looked great too cosmetically but functionality is the big issue. First it wouldn't give me any notifications of emails - I went through all the prompts and settings, changed everything I could...still no notifications of emails. The only time it will notify me is if I actually open up Gmail - then it will pop up saying you have x amount of unread messages but if I'm already opening the program it's completely useless! Then I started having people tell me "I was calling you but it went straight to voicemail" I thought it was odd but maybe it was service related. I went to my wireless provider and they said there is nothing wrong with the service it's probably the device. My wife has the same exact service with a different phone and has service throughout the house. Now not only can i not make or receive calls in my house I can't send text messages! The phone will say I have full service (5 bars) plus I'm connected to Wifi 6 with a 1 gig fiber connection. When I go to send a message it will just keep spinning and spinning until the message times out after a long time. The only way I've figured out how to trick the phone into sending messages is send the message, turn the phone on airplane mode and then switch airplane mode off again and the message will send. To add insult to injury last month I noticed a small artifact on the screen that does not go away. I've had this phone for less than a year and I have a permanent line on the screen that shows even when it's on the charging screen. I purchased this from the seller "TheGadgetDeals" because they had 100% positive reviews - not sure how that's possible if these are the kind of phones they are selling. So with no email notifications, no ability to make or receive calls or send text messages in my house (and a lot of times other places) I effectively have a $450 paper weight masquerading as a phone. If you're ok with spending nearly $500 on a phone that will be essentially unusable within 7 months of purchasing I say go for it, otherwise I'd look elsewhere! 1/10 WOULD NOT RECOMMEND PS. After owning the phone for a month or so i purchased another one for my wife (also from TheGadgetDeals) her phone came in excellent cosmetic condition but every time she would make or receive a call the person on the other end would hear an echo of everything they said so that phone had to returned ... show more
Reviewed in the United States on October 29, 2023 by Michael
    • Good enough
I got a nice phone. It just seemed to be on service for its display, the gorilla glass victus doesn't look really good... it got some scratches very easily... so I'm wondering if this was for real a gorilla glass... anyway. In terms of functionality and cameras are working really good. Fast charge, wireless charging and reverse charging works pretty well. Recommended to get a screen protector asap and a case... ... show more
Reviewed in the United States on July 28, 2023 by Byron Yamit Fernandez Gomez
    • I needed a phone upgrade and this S21 Ultra exceeds expections so far )2 days) Intuitive
With only 2 days! who knows? But signs are very good so far!! In densely populated areas, without 5G access, my prior phone MIUI android, seemed to be sent to the back of the internet line....spinning for access until oblivion. Most of the time its not a big deal, when I have time to wait. But when I'm traveling and need EV charging waiting 10 minutes seems like forever; or standing at the ticket gate with people behind me, waiting for my tickets to show up on my phone....neither scenario is a good place! So far my garage access is working great vs previously.( night v day different) I bought the 12 G Ram, due to my desire to access sources promptly after what I was experiencing. Sure, 12 G is said to be over kill, for a non-gamer....BUT right or wrong? the extra RAM should place me in the front of the line when its my turn... in need! So time will tell. For example; While in Padre -Petco park my old phone was downgraded to 2 G, (> 96ms latency/outdoor) with possibly 44000 folks on their phones that was a long wait...& for nothing! I stayed with Samsung, because its what i am used to, and my son (a geek) likes. Conclusion old man is very pleased thus far. ... show more
Reviewed in the United States on May 17, 2023 by TC
    • Galaxy s21 ultra into 2024 - Android 14!
The Samsung Galaxy S21 Ultra is an outstanding phone that delivers an exceptional user experience. Its 6.8-inch Dynamic AMOLED display is stunning, with vibrant colors and a smooth 120Hz refresh rate. The camera system, featuring a 108 MP main sensor and 100x Space Zoom, captures incredibly detailed and beautiful photos. Powered by the Snapdragon 888 chipset, the S21 Ultra offers unrivaled performance for multitasking and gaming. It's sleek, feels good in the hand, performance is excellent, camera is phenomenal, and it's getting Android 14 update, this phone truly stands out even in 2024. If you want a top-of-the-line smartphone that excels in every aspect, the Samsung Galaxy S21 Ultra is still a viable contender. ... show more
Reviewed in the United States on November 1, 2023 by Nick

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