Samsung Galaxy S21 Ultra 128GB 5G Smartphone (Unlocked, Black)

BH #SAGAS21U12SB • MFR #SM-G998UZKAXAA
Samsung Galaxy S21 Ultra 128GB 5G Smartphone (Unlocked, Black)
Key Features
  • GSM + CDMA / 4G LTE + 5G Compatible
  • North American Variant
  • Quad Cameras (108MP, 12MP, 2 x 10MP)
  • Wide, Ultra-Wide, 3x Tele & 10x Tele
Create professional quality content with the pro-grade camera system of the Samsung Galaxy S21 Ultra STORAGE 5G Smartphone. The quad camera system provides a 108MP wide, 12MP ultra-wide, 10MP 3x telephoto, and 10MP 10x telephoto cameras. In addition to 3x & 10x optical zoom, Space Zoom offers up to 100x digital zoom for long distance shots. Video recording can reach up to 8K resolution, and with 8K Video Snap, specific memories can be plucked out as 33MP hi-res stills. With support for an (optional) S Pen, you can precisely edit the footage, annotate, draw, and more.
Discontinued
This device is unlocked and should work fully with carriers listed below with green bars. Yellow bars denote partial network coverage. A SIM card and service plan must be purchased separately. Network compatibility listed here is for reference only and does not guarantee phone compatibility or activation on CDMA Carriers.

True Know-How

Ask Our Experts

800.606.6969

Samsung S21 Ultra SM-G998U Overview

  • 1Description
  • 2GSM + CDMA / 4G LTE + 5G Wireless Connectivity
  • 3North American Variant / US Compatible 5G
  • 4Space Zoom
  • 5Super Steady
  • 6Portrait Modes
  • 7Low-Light Photos
  • 8Eye Comfort Shield
  • 9Wireless Charging
  • 10Priority Mode
  • 11Knox Vault
  • 12Motion Mirror
  • 13One UI 3
  • 14Additional Features

Create professional quality content with the pro-grade camera system of the Samsung Galaxy S21 Ultra STORAGE 5G Smartphone. The quad camera system provides a 108MP wide, 12MP ultra-wide, 10MP 3x telephoto, and 10MP 10x telephoto cameras. In addition to 3x & 10x optical zoom, Space Zoom offers up to 100x digital zoom for long distance shots. Video recording can reach up to 8K resolution, and with 8K Video Snap, specific memories can be plucked out as 33MP hi-res stills. With support for an (optional) S Pen, you can precisely edit the footage, annotate, draw, and more.

With a stunning 6.8" Quad HD+ Dynamic AMOLED 2x screen, the S21 Ultra has a large canvas to accommodate an S Pen. Integrated AI automatically adjusts the display's refresh rate between 10 to 120 Hz based on the content you view, providing a smooth scrolling experience when you need it, and battery preservation when you don't. Gorilla Glass Victus protects the display with extremely durable damage and scratch resistance. A tiny hole in the Infinity-O display accommodates a 40MP camera to handle your selfies.

The screen on the Samsung S21 Ultra is how we experience all of what a smartphone can offer us, and much of that content is streamed to us via the internet. From streaming movies and TV shows to online gaming. This is why Samsung equipped the S21 Ultra with 5G support in both Sub-6 and mmWave network frequencies, maximizing your ability to utilize the blazing fast speeds that 5G can offer. The phone also supports Wi-Fi 6E, which expands home and public network support into the latest 6 GHz spectrum for more stable connections and the fastest bandwidth possible.

GSM + CDMA / 4G LTE + 5G Wireless Connectivity

This phone is designed to work on select CDMA, GSM & 5G networks, including sub-6 and mmWave. 5G is a cellular network data protocol capable of extremely fast data speeds that rival, or surpass, that of wired broadband Internet providers. 5G speeds can vary considerably based on location, but on average, should have no problem streaming 4K video. As 5G upgrades over time, mobile AR and VR applications could become possible. The phone is backwards compatible with 4G LTE, 3G, and 2G data for locations that do not support 5G.

North American Variant / US Compatible 5G

The SM-G998 is a North American variant of the S21 Ultra 5G. It may be used in other parts of the world; however, 5G access may be limited or unsupported, depending on the network. Please choose your country/carrier above to confirm the network compatibility of this phone.

Space Zoom

If you can't get to your subject, bring it to you with Space Zoom. In addition to the 3x and 10x optical zoom abilities of the telephotos lenses, Space Zoom provides up to 100x digital zoom for focusing on people and objects far in the distance, and with Zoom Lock, your subject will remain centered so you can more easily capture a photo or video.

Super Steady

This feature works to remove the shakiness that comes when moving as you film, resulting in smooth videos akin to what you would get with an action cam.

Portrait Modes

The 40MP selfie camera does not just simply take your photo. It uses integrated AI to bring out your features, ensure true-to-life color, and provide fast autofocus. You also get multiple portrait modes to get creative with what you share online. Choose from your original AI-enhanced photo, Blur, Studio, High-Key Mono, Low-Key Mono, Backdrop, or Color Print.

Low-Light Photos

The Bright Night sensor of the S21 Ultra allows for clear image capture with bright and vivid colors, even in the dark of night. It also gives you the ability to control exposure time. The camera system is also equipped with nona-binning, which combined 9 pixels into 1. The result are pixels that can receive more light for sharper low-light shots with less noise.

Eye Comfort Shield

More and more, smartphones are becoming our window in which we view the world. With so much time spent staring at a digital screen, Samsung created Eye Comfort Shield. It's an AI-based technology that will automatically adjust the blue light emitted from your phone to help minimize eye strain.

Wireless Charging

With support for Fast Wireless Charging 2.0, you can recharge the S21 Ultra without the need of a cable. You can also use the S21 Ultra to charge other devices. With Wireless PowerShare support, you can place another compatible Galaxy smartphone or Galaxy Buds onto the S21 Ultra to give them a quick recharge.

Priority Mode

Whether you're going up against an AI or human opponent, victory requires focus. With Priority Mode engaged, calls are blocked as you play.

Knox Vault

Samsung provides a dedicated chip to help ensure that your data and personal information remain safe. It also encrypts your biometric data that you can use to more easily unlock your phone.

Motion Mirror

This feature lets you view yourself on your TV via the S21 Ultra's camera as you work out, helping you better replicate exercises and forms being demonstrated by an instructor.

One UI 3

Enhancing the Android operating system is Samsung's One UI 3, which delivers a plethora of features to make using the S21 Ultra easier and more convenient. Some features include the ability to have multiple widgets on your lock screen, so you can see more info at-a-glance. You can also customize a widget's size and opacity. There's also an object eraser ability that lets you edit photos to remove unwanted people or objects with a few taps.

Additional Features

Every lens supports 4K video at 60 fps
12-bit HDR combines two 10-bit frames for exceptional dynamic range
12-bit RAW support in Pro Mode
Audio tuned by AKG
5000mAh battery for all-day power
Microsoft OneDrive support for cloud syncing files
Large ultrasonic fingerprint reader
IP68 water and dust resistance
Compatible with Google Duo
UPC: 887276473345

Samsung S21 Ultra SM-G998U Specs

Performance
Operating SystemAndroid 11
Memory12 GB
ProcessorQualcomm Snapdragon888
CPU2.84 GHz Kryo 680 Single-Core
2.42 GHz Kryo 680 Triple-Core
1.8 GHz Kryo 680 Quad-Core
GPUAdreno 660
Storage128 GB
Display
Size6.8"
Native Resolution3200 x 1440
Refresh Rate120 Hz (at QHD+ Resolution)
Aspect Ratio20:9
Pixel Density515 ppi
Panel TypeOLED
Screen CoatingGorilla Glass Victus
Input/Output Connectors
Ports1 x USB Type-C (USB 3.1 / USB 3.2 Gen 1)
Speaker2
Media/Memory Card SlotNone
SIM Card Slots1 x Nano SIM
Communications
CDMA 2GCDMA: 800, 1900 MHz
GSM 2GGSM, GPRS, EDGE: 850, 900, 1800, 1900 MHz
CDMA 3GCDMA2000, EV-DO: 800, 1900 MHz
GSM 3G/3.5GUMTS, HSPA+: 850, 900, 1700, 1900, 2100 MHz
4G LTELTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 Bands
5G NRn2, n5, n25, n41, n66, n71, n260, n261 Bands
Wi-FiWi-Fi 6E (802.11ax)
BluetoothBluetooth 5.2 + LE 
NFCYes
GPSYes
ANT+ SupportYes
FM RadioYes
Camera System
Camera SystemRear
Wide: 108 MP 1/1.33" Sensor (0.8 µm Pixels) with a 26mm f/1.8 Lens
Ultra Wide: 12 MP 1/2.6" Sensor (1.4 µm Pixels) with a 13mm f/2.2 Lens
Telephoto: 10 MP 1/3.2" Sensor (1.22 µm Pixels) with a 240mm f/4.9 Lens
Telephoto: 10 MP 1/3.2" Sensor (1.22 µm Pixels) with a 70mm f/2.4 Lens
Front
Wide: 40 MP 1/2.8" Sensor (0.7 µm Pixels) with a 26mm f/2.2 Lens
Camera FlashRear: 1 x LED
Focus TypeRear Wide: Laser Autofocus, Phase-Detect Autofocus
Rear Ultra Wide/Telephoto: Phase-Detect Autofocus
Front Wide: Phase-Detect Autofocus
Computational PhotographyMulti-Camera Noise Reduction (Night Mode)

Multi-Camera Depth-of-Field Control (Portrait Mode)

Multi-Camera Dynamic Range Enhancement (HDR)
Video RecordingRear
UHD 8K at up to 24 fps
UHD 4K at up to 60 fps
1080p at up to 60 fps (240 fps in Slow-Mo Mode)
720p (960 fps in Slow-Mo Mode)
Front
1080p at up to 60 fps
UHD 4K at up to 60 fps
General
Biometric AuthenticationFingerprint (Under-Screen)
SensorsAccelerometer, Barometer (Altimeter), Compass, Fingerprint, Gyroscope, Proximity
Water ResistanceResistant
IP RatingIP68
KeyboardVirtual
Pointing DeviceNone
BatteryInternal Lithium-Ion (5000.0 mAh)
Fast Charging TechnologyUSB Power Delivery
Wireless ChargingQi, PMA up to 15 W
Dimensions (W x H x D)3.0 x 6.5 x 0.4" / 75.6 x 165.1 x 8.9 mm
Weight8.1 oz / 229 g
Warranty LengthLimited 1-Year Warranty
Packaging Info
Package Weight0.85 lb
Box Dimensions (LxWxH)7.1 x 3.6 x 1.4"

Samsung S21 Ultra SM-G998U Reviews

Beast Phone

By ReyWay
Rated 5 out of 5
Date: 2021-07-11

I've received this phone a couple of days ago. During that timeline, I was able to do heavy gaming on it (Asphalt 9 with highest graph settings) with no lag, watch movies, and scroll on social media. The overall experience was amazing. All social media apps (Instagram, Snapchat, TikTok) seemed to open with hardly noticeable load time. Although something to note, apps do reload every now and then. This is usually when there are A LOT of apps open and those apps include games, so I recommend locking the three apps you don't want to reload/close. The phone is a bit big, but the majority of people may be able to adapt to the size of this phone. The camera experience has been nice. Amazing results from shots with good lighting and good results from shots with low lighting (amazing with night mode). With that all said, I actually love this phone and I'm not looking to upgrade anytime soon.

Low fall breakage

By myner91
Rated 1 out of 5
Date: 2021-07-06

If you drop your phone at all dont get this phone. Dropped from desk to ground on the beveled edge and created a chip that made hairline cracks in the screen. A line down the middle of the phone happened at the same time. Shortly after that the bottom half of the screen stopped working. I have had s4 that fell down the stairs with me and never broke, my s8 dropped from the same distance and broke on the corner, but the screen was fine. Now my s21 Ultra is toast. Do your own research on drop test, CNET just recently did one, and the whole s21 line failed. Samsung is using "psychical damage" not to warranty the screen. Apple does not seem to have this problem and Google even with the screen broken repaired my daughters phone when the pixels went out. Seems to me there are 2 other options for the next phone I get. Sad to say Samsung has lost a loyal customer today.

Amazing Phone, BUT...

By Clynn2u
Rated 3 out of 5
Date: 2021-07-05

I purchased my phone May 19, 2qn021. It does do ammazing things lightening fast, however, the screen is built to crack! I haven't found a screen protector that protects the screen. The first drop was on concrete and I take full responsibility. The other 2 breaks happen on the edge where the screen protector barely reaches.

Best Samsung Galaxy, yet!

By Lamichel
Rated 5 out of 5
Date: 2021-07-02

I am one of those folks that tends to take sometime to upgrade things. But I have been a long-time Samsung follower since my first Samsung smart phone from 2011. I have been holding on to my Samsung S9+ for years and realized that it was time to upgrade. Typically Samsung comes out with new devices, often. So I waited but when I saw the S21 Ultra, I knew I has to make a move. So far, I love it! Like most quality Samsung model classes; the ultra feels great in my hand... though it took me awhile to get used to the screen being where the finger lock is and the giant fly eye cameras in the back. But once I got used to the feel, I have found that I am excited about using the phone, again. And taking lots of pictures! The pictures are amazing! And the apps, as of now, run smoothly. It's much easier to play games on it, too. If you are looking for something new and of quality, this has to be the best camera phone in the market.

Processor Issues & Internet - Galaxy s21 Ultra 5G

By Carlton
Rated 2 out of 5
Date: 2021-07-10

Galaxy s21 Ultra 5G. This cellular device has been slower and not processing APPs as fast as I would like, I am returning this back to Best Buy today. I purchased this on June 30, 2021. On three of my games the game does not process unless I delete caches and reboot the cell one or two times. The game is blank on the screen half the time I open them. Also, when I am typing a google search sometimes no matter how many times I try to type in the middle of a word string it jumps to the end unless I refresh the website. I am not sure why some of the APPs such as games (golf king, call of duty, war robots, NFL madden), ESPN, and others have issues with load times and use. The graphics are nice but there is a processing issue with connecting to the internet very slow too often which effects load time for apps and when apps come up they are not fully functionable.

Death Screen after 6 months

By Xavi
Rated 1 out of 5
Date: 2021-07-10

I bought this cellphone 6 months ago and the screen just went black while I was scrolling thru FB. I have tried all the "tricks" to reset the phone with no luck. I have never dropped or got water damaged to the phone. Now I am unable to get warranty service without being in the US as I am a US Military stationed in Poland. So if I decide to take it to an authorized samsung care center it will have to be at my own cost. I have own multiple samsung galaxy S, S3, S5, S7 Edge, S9 Plus and S21 Ultra and this is the first time I am disappointed at the cellphone quality. All my other phones has lasted well over 2 years as I take care of them.

Terrible performance and unreliable

By Josh
Rated 1 out of 5
Date: 2021-07-06

The phone restarts randomly throughout the day and is unable to handle day to day tasks. It crashes and freezes often. Troubleshooting does not resolve the issue.

Best phone ever.!

By Anonymous
Rated 5 out of 5
Date: 2021-07-06

I downgraded from the s21 ultra to the s21 to just see what the difference is.. and there is so much. The screen is not technically mich bigger but when you compare in real time, the ultra is the one especially for my fellow texters. The ultra also had a magnificent camera. I didn't think the specs were much different then the s21, but then when using the 2 it just feels life there is so many better features within the ultra compared to the s21. And the s pen is the greatest ideas of all. I don't like the screen on the notes but I do like the pens so this is by far the best phone I have ever held yet.

See any errors on this page? Let us know

YOUR RECENTLY VIEWED ITEMS

What is a factory country

What is a factory country
Asked by: mohnad
The Samsung Galaxy S21 Ultra 128GB 5G Smartphone (Unlocked, Black) BH #SAGAS21U12SB was manufactured in Vietnam.
Answered by: nancyg
Date published: 2021-04-20

Is the back of the phone made of glass?

Is the back of the phone made of glass?
Asked by: Tyrese
Yes, the back of the Samsung S21 Ultra is made of Glass (Corning Gorilla Glass Victus) and it has an Aluminum Frame.
Answered by: Nancy
Date published: 2021-03-09

Does it have band 14?

Does it have band 14?
Asked by: Tyrese
This phone would support the following 4G Bands. 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71.
Answered by: Moe
Date published: 2021-03-09

Which snapdragon is it using?

Which snapdragon is it using?
Asked by: Roberto
The Samsung Galaxy S21 Ultra 512GB 5G Smartphone (Unlocked, Black) BH #SAGAS21U512B • has the Qualcomm Snapdragon888.
Answered by: Miguel
Date published: 2021-02-22

Does it include a case?

Does it include a case?
Asked by: Roberto
A case is not included with the phone.
Answered by: Geoffrey
Date published: 2021-02-25

Is this the dual sim model?

Is this the dual sim model?
Asked by: Roberto
No, the Samsung Galaxy S21 Ultra 512GB 5G Smartphone (Unlocked, Black) BH #SAGAS21U512B is not the dual sim version. B&H # SAGS21UB256B is a dual sim variant but it is 256gb, not 512gb.
Answered by: Nancy
Date published: 2021-02-22

Would it work in spain?

Would it work in spain?
Asked by: Roberto
Yes, With Movistar, Orange, Vodafone, and Yoigo you will have full 4G LTE Coverage.
Answered by: Dov
Date published: 2021-02-23

Will Samsung Galaxy S21 Ultra #SM-G998UZKEXAA ...

Will Samsung Galaxy S21 Ultra #SM-G998UZKEXAA work on Telus 5g network in Canada?
Asked by: Robert
You would have to check with your carrier for 5G compatibility.
Answered by: Nancy
Date published: 2021-04-06
  • y_2021, m_7, d_14, h_19CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.18
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_30
  • loc_en_US, sid_1614296, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo
036

Close

Close

Close