Samsung - Galaxy S21 Ultra 5G 512GB (Unlocked)

Name: Samsung - Galaxy S21 Ultra 5G 512GB (Unlocked)
Brand: Samsung
SKU: 6441102
Rating: 4.7 (19 reviews)

Model: SM-G998UZKFXAA

SKU: 6441102

This item is no longer available in new condition. See similar items below

Key Specs
- Screen Size: 6.8 inches (Size of the screen, measured diagonally from corner to corner.)
- Built-in Storage: 512 gigabytes
- Phone Memory (RAM): 16 gigabytes (Random-access memory (RAM) temporarily stores data so that it can be accessed quickly. The size of the RAM determines how efficiently the phone can handle large amounts of information at once, such as switching between several open apps.)
General
- Product Name: Galaxy S21 Ultra 5G 512GB (Unlocked)
- Brand: Samsung
- Model Number: SM-G998UZKFXAA
Display
- Screen Size: 6.8 inches (Size of the screen, measured diagonally from corner to corner.)
Network
- Carrier: Unlocked
- Unlocked: true (Can be used with any carrier, typically by exchanging the phone's SIM card with another one compatible for the intended area of service. Can be used with a new or existing cellular service plan.)
- Universal Unlocked: true (Can operate on any compatible SIM card and carrier.)
- No-Contract: true (Can be purchased without committing to a contract with a cellular service provider. No-contract phones are only compatible with a specific carrier.)
- Mobile Hotspot Capability: true (A hotspot-enabled device is able to connect wirelessly to a cellular network and share the connection via Wi-Fi with nearby compatible devices.)
Connectivity
- Headphone Jack: false (The device features an interface that allows for the connection of headphones.)
Compatibility
- Charging Interface(s): USB Type C (The connection for transmitting power to charge the device.)
- Voice Assistant Built-in: Bixby (A digital assistant built into the device that uses voice commands to answer questions and control smart devices.)
Power
- Wireless Charging: true
Features
- Model Family: Samsung Galaxy S21 Ultra 5G
- Ingress Protection (IP) Rating: IP68 (A 4 to 6 character code classifying a product's degree of protection against intrusion of solid particles and liquids as well as impact. Each number in the IP Code denotes a level of protection, determined through testing and published by the International Electrotechnical Commission (IEC). The first digit represents the degree of protection against solid foreign objects or particles and the second digit represents the degree of protection against water ingress.)
- Built-in Storage: 512 gigabytes
Performance
- Operating System: Android 11 (The operating system manages all software and hardware, including files, memory and connected devices. Most importantly, it lets you interact with your device and your programs in a visual way; otherwise, you'd be typing computer code to get anything done.)
- Processor Brand: Qualcomm
- Phone Memory (RAM): 16 gigabytes (Random-access memory (RAM) temporarily stores data so that it can be accessed quickly. The size of the RAM determines how efficiently the phone can handle large amounts of information at once, such as switching between several open apps.)
Other
- UPC: 887276513430

Galaxy S21 Ultra 5G is crafted so you don’t need to choose between video and photo. With a single tap, you can pull super-clear stills straight from high-resolution 8K video. Or if you’re looking to capture stunning photos, the 108MP camera feels like you’ve brought your own professional studio with you. Galaxy S21 Ultra 5G, designed to be epic in every way.

Life moves fast. S21 Ultra moves faster.: Transform your story sharing, live streaming, video-editing and multi-tasking with hyperfast processor speeds (Compared to GS20)
Universal Unlocked: Compatible with all major U.S. carriers, including Verizon, AT&T, Sprint, and T-Mobile. Also compatible with prepaid carriers, including Cricket Wireless, Boost Mobile, MetroPCS, Simple Mobile, Total Wireless, Tracfone, Net10, Mint, and H2O.
Connectivity built for today. And tomorrow.: Built with 5G connectivity in mind, you can share, scroll, browse and binge in a flash(1).
Our best camera. Your best life.: Zoom in close, take photos and videos like a pro, and capture incredible share-ready moments with our easy-to-use, multi-lens camera.
Trust us, you'll look amazing in 8K video: A night out. Your best friend’s birthday party. Family moments you’ll want to remember forever. Capture your life’s best moments in head-turning, super-smooth 8K video.
Movie-making magic in the palm of your hand: Slide into the director’s chair and create share-ready videos on the spot with multi-cam recording and automatic pro-style effects.
Spontaneity, now captured from multiple angles: Create share-ready GIFs and videos in a single take(2) or pick your favorite moments and pull your favorite stills in super high-res to share with your followers.
The highest resolution camera you can get on a smartphone: Pick up more pixels with the highest resolution you can get on a smartphone at 108MP, while an upgraded sensor gives you more color and way less noise in low light(3).
Get closer with the most powerful zoom on a smartphone: Zoom in with amazing clarity with a dual-lens combo of 3x and 10x optical zoom, or go even further with our revolutionary 100x Space Zoom.
Our best smartphone display yet. There, we said it.: Galaxy S21 Ultra comes with our highest contrast ratio and a 6.8" adaptive display that automatically adjusts from 10Hz to 120Hz. Plus, intuitive blue-light management adjusts based on time of day to keep your eyes happy.
All your photos are keepers. So keep ‘em.: Every moment matters. Hold on to them with S21 Ultra 5G’s extensive built-in storage (4).
All day battery, and then some(5). No charging(6).: Power every scroll, click, tap, and stream all day long and then some(5) with an intelligent battery that works with you, not against you.
A striking new phone design — may cause phone envy: Modern haze finishes with an all-new integrated metal camera design and our toughest glass on a smartphone. Groundbreaking — it’s a vibe. And it looks good on you.

Q: Does S21 ultra support sd card expandable memory?

A: no expandable memory

Q: Is the Samsung Galaxy S21 Ultra 5G 512GB (Unlocked) smartphone compatible with the Tracfone Wireless service?

A: I would be carefull. After purchasing the factory unlocked S21 ultra I called tracphone to transfer my old phone number from Tracphone to my new phone. They said I neede a Verizon sim card. So I purchased a sim card and called again. After almost an hour they said it will not work, I have to purchase a sim card kit for Tracphone. Did that and called again. After an hour and a half they said it was defective sim and it was their sim card. So now they are sending me another sim card that is supposed to work. This has been going on for 2 weeks and still waiting. It took a week to get the phone. 4 days for the first sim card. 4 more days for the second sim card and now going on 4 days for the third sim card and still no guaranties it will work. Almost 5 hours combined to Tracphone and still I have no service on a very expensive phone. I bought it for the camera and only rarely make calls so would like the cheap tracphone but am getting disgusted.

Q: Does the Samsung S21 Ultra 512GB/16G [unlocked], comes with a pre-installed screen protector? If not, which one do you recommend?

A: Top-of-the-line screen protector. Pricey but worth it to protect a $1000+ phone. https://www.zagg.com/en_us/shop-by-device/galaxy-s21-ultra?brand=165

Q: Can you trade in a phone for credit towards an unlocked s21 ultra 5 g?

A: Yes you can. See the trade in link at the bottom of the page.

Q: Since this phone is "unlocked", do I pull the sim card out of my present phone and insert it into the new phone?

A: Yeppers. This is half of the reason I love unlocked phones. Understand though that some carriers use different networks and different SIM cards. There are versions of this phone (EU variants, I believe) that are "dual SIM" meaning that they can use both of the major variants of SIM card and are compatible with both networks. Unlocked phones are kind of a new thing here in the US where we allow carriers to monopolize the airwaves and essentially build high walls around their particular flavor of service/network, but other parts of the world have been past this for a while. We let people pile cash as high as they can, which arguably accomplishes nothing for anyone, then the bureaucracy protects their money all day to the detriment of the people. I'm not going to start quoting Marx or anything, but...

Q: What assistant will it have? If bixby I'm changing brands.

A: it's Bixby but you can also use google.

Q: do unlocked Galaxy S21 Ultra 5G phones have wi-fi calling, as exists in the major providers and brands, pre-installed?

A: undefined

Q: Does this phone have touch ID access? for facial recognition or both?

A: Hi Bis, Thank you for reaching out. We understand how important it is to know if your Galaxy S21 Ultra has Face ID and Touch ID access for optimal experience. To answer your question, it does have a Face ID and Touch ID access. Please click on this link to an article to guide you on how to set up the fingerprint sensor on your Galaxy phone: https://www.samsung.com/us/support/answer/ANS00082563/ Also, please visit this link below to set up Facial recognition security on your phone: https://www.samsung.com/us/support/answer/ANS00062630/ Should you encounter some issues, you may reach us via the following for immediate support: 1. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us 2. Facebook Messenger: http://m.me/samsungsupport 3. Twitter: https://twitter.com/messages/compose?recipient_id=18768513 Reference Number: 1144155893 Thank you for choosing Samsung. Have a great day! ^Chrystel

Customers are saying

Customers express satisfaction with the Galaxy S21 Ultra 5G 512GB (Unlocked) camera, describing the pictures taken as "perfect". The phone's battery life is also praised, with users reporting that it lasts the entire day.

This summary was generated by AI based on customer reviews.

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

Rated 4 out of 5 stars
Great Phone but is it Worth the Price?
Got lucky and was able to find this as an open box and on sale. Had the phone for a couple of weeks and here's my initial thoughts and I'm only going to focus on a few things: CAMERA One of the main driving factors in getting this phone was the dual optical lenses and coming off the last few LG V series phones I'm not afraid to use the Manual/Pro modes. It is challenging but I was able to get some social media worthy shots using the 100x zoom as you can see in the pictures attached where I progressively went from 1x to 100x (1x, 3x, 10x, 30x, 100x). All of the pictures were used holding the phone in my hand: no sticks or tripods or anything like that. I'm not crazy about the layout in the Pro mode but it will take some getting used to. Played around with the slo-mo video with a roller coaster and it was excellent. My biggest gripe with the camera is for whatever reason flames from tiki torches had a strong blue/purplish hue as you can see in the picture. SCREEN The screen is absolutely gorgeous. Great for watching videos. I never understood the hype about 120hz refresh rates until now, but it is still not enough to be a must have for me. I am not a fan of hole punch cameras but there are some great wallpapers out there that hide it. That being said I cannot get the underscreen fingerprint reader to work for me. Maybe I'm used to the nuances of the LG V60 or maybe the Zagg screen I have is throwing it off. BATTERY So far so good. Get through the day with no real problems. Only once was I low where I had to top off but that was a very intense day at an amusement park but even then I think I could have gotten through the day without topping off. SPEED Overall the phone is fast for my needs. The 512GB storage is great for longer videos and quickly storing them. I don't go by artificial bench scores but I have seen real world tests that push the processor where the 865 was faster. But again, for the typical user the speed is very fast. OVERALL For what I paid for the phone and with some incentives I got on top of it yes, it is a great purchase for the money. It takes great pictures overall and the lenses are extremely flexible. The battery is great for the typical user. If you are looking for a phone for point, shoot, post, there are better options out there if I'm just looking at an MSRP comparison. If you are not afraid to use the phone's pro modes or other features then yes this phone is a good option. I do wish there was a headphone jack (I know, it's dead with the major players) but I still prefer it to listening to audio and it's nice to have the capability to use better peripherals such as external mics. LONG STORY SHORT The phone is great but not worth the MSRP price. If you can get it during a promotion (eg, sale, open box, extra $ for your trade, other forms of store credit, etc.) then go for it. If you are a point-shoot-post photographer, you may be better off going elsewhere unless you are really looking to take advantage of the dual optical lenses
Posted 4 years ago by SportsDuck
Rated 5 out of 5 stars
Power User Phone with all the milkshakes
So about this phone after a few months, the cam is amazing on both video and taking photos. The AI driven edit mode is just out of this world. I love the speed, nothing ever hangs, I pick up the phone and it just works. Physical: What I like most about it is the slim form factor, the feel of it is amazing and I love what Samsung has done with the hardware buttons with the customizations. The screen just glides without error. The type-C connection works with any hub like adapter. Software: So it runs Android 11 and to be honest the phone feels like stock android with a little Samsung Flair, you can remove most of the little pre installed apps but you honestly may find use for them so just try them. The OS does not take up much space and I recommend the 16gb version. Battery life is about 1.5 days for my use and I game on mine, it keeps really cool at all times. The ultra charge is neat if you really need it but really just keep normal charging and turn off fast and ultra charge unless you need that 10 min 80 percent battery. The OS is slicky smooth, I do like my own launcher, I use Nova Launcher and with the S21 it is simply amazing. The Samsung Dex is like a perfect linux desktop to work on. It does not have an SD card slot which is fine because it has lots of space as is and a simple SSD will work with it for extra storage. The price is really the only con, but you do get an amazing phone with all the features you could ever want. Now with the S Pen, the S pen works flawless on this phone, I love taking quick notes and when I am done just send it off, or in a meeting taking notes with this thing is amazing. I love the option to handwrite in combination with or without a keyboard and it transcribes my messy handwriting perfectly. It also learns a bit from you every time you use it so amazing. I recommend the Spigen Liquid Air Armor Designed for Galaxy S21 Ultra Case (2021) case they have on Amazon or the Black Case Logic: Caseology Vault Compatible with Samsung Galaxy S21 Ultra. I use both on my two s21 ultra 512gb. This is my daily driver and hopefully Samsung will improve on this winning design. This pairs really well with the Samsung Tab S7+
Posted 4 years ago by Ahsoka
Rated 5 out of 5 stars
Up to date phone with quality!
Blown away by this phone , was on edge about upgrading and not really messing with the phone at all in the store. And decided to make it happen and got to tell everyone what! Amazing phone, I know people look away because no SD card slot but mostly everyone doesn't need that amount of storage. I thought I needed more with my note 9 with 512gb + my SD card with 126gb to begin with.. and I looked at the amount of storage I used before upgrading and I didn't even budge 150gb with the phone and SD card combined and that's owning it for since it came out... and I heavy use it for my work for photos. So just take a second and evaluate your usage. And for the headphone jack.... you can buy an adapter for the charger port to make it work with wired headphones. Simple and easy. Most people now and days have Bluetooth headphones anyways though so I don't see the problem. And the phone already comes with a USB cord to better assist with transferring from your computer or charging it. Overall the phone has satisfied me to it's specs and convenience. I highly recommend!!!
Posted 4 years ago by Mike