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Phantom Black Samsung Galaxy S21 Ultra smartphone with quad rear cameras

SAMSUNG

SAMSUNG SM-G998UZKAXAA Galaxy S21 Ultra 5G 128GB 12GB Phantom Black cell phones - unlocked

SKU CH-VWJ3-JY29K MPN SM-G998UZKAXAA

Unlocked 5G smartphone with 6.8-inch 120Hz Dynamic AMOLED 2X display, 108MP quad camera with 3x and 10x optical zoom, 8K video capture, 128GB storage and 12GB RAM

  • Technology5G
  • Bands & Frequencies2G GSM GSM850, GSM900, DCS1800, PCS1900 2G CDMA CDMA800, USP
  • Form FactorSmart Phones
  • ColorPhantom Black
  • SIM Card TypeNano SIM
  • SensorsAccelerometer, Barometer, Fingerprint Sensor, Gyro Sensor, G

RAM 12GB

Storage 128GB

  • 128GB
  • 256GB

Option S21 Ultra

  • S21
  • S21 Ultra
  • S21+

Struck-through versions exist but are not stocked here.

  • 8" Dynamic AMOLED 2X display at 120Hz for smooth visuals
  • 108MP quad camera with 3x and 10x optical zoom captures distant detail
  • 8K video recording at 24fps delivers cinema-quality footage
  • 12GB RAM and 128GB storage power multitasking and apps
  • Unlocked 5G with broad band support works on major networks

Unlocked 5G flagship with 128 GB storage

The Samsung Galaxy S21 Ultra 5G ships unlocked with 128 GB of internal storage and 12 GB of RAM. Its 6.8-inch Dynamic AMOLED 2X panel runs at 120 Hz and a 3200 x 1440 Quad HD+ resolution. The quad rear camera array combines a 108 MP wide module with two 10 MP telephoto lenses and a 12 MP ultra-wide unit. 5G connectivity covers a broad set of FDD and TDD LTE bands plus sub-6 GHz NR.

Stepping up from single-lens or 4G-only handsets

Buyers moving from a phone with one rear camera gain 3x and 10x optical zoom plus up to 100x digital zoom. The jump from 4G to 5G adds access to the listed NR bands for faster data where coverage exists. 8K video capture at 24 fps replaces lower-resolution recording. The upgrade is worthwhile when zoom flexibility, high-resolution stills and 5G speeds are daily needs.

Ready to use with a nano SIM or eSIM

Insert a nano SIM into the single slot or activate the embedded SIM through your carrier; no tools are required. The device arrives new in box with no carrier locks. Common issues include forgetting to transfer eSIM profiles before wiping an old phone and overlooking the lack of a microSD slot for storage expansion.

Highlights

  • 8" Dynamic AMOLED 2X display at 120Hz for smooth visuals
  • 108MP quad camera with 3x and 10x optical zoom captures distant detail
  • 8K video recording at 24fps delivers cinema-quality footage
  • 12GB RAM and 128GB storage power multitasking and apps
  • Unlocked 5G with broad band support works on major networks

Specifications

BrandSamsung
ModelGalaxy S21 Ultra
Part NumberSM-G998UZKAXAA
Technology5G
Bands & Frequencies2G GSM
GSM850, GSM900, DCS1800, PCS1900
2G CDMA
CDMA800, USPCS1900
3G UMTS
B1(2100), B2(1900), B4(AWS), B5(850), B8(900)
3G CDMA
BC0(800), BC1(1900), BC10(800)
4G FDD LTE
B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B13(700), B14(700), B18(800), B19(800), B20(800), B25(1900), B26(850), B28(700), B30(2300), B66(AWS-3), B71(600)
4G TDD LTE
B38(2600), B39(1900), B40(2300), B41(2500), B46(5200), B48(3600)
SIM Slot Type
SIM 1 + Embedded SIM
Form FactorSmart Phones
ColorPhantom Black
SIM Card TypeNano SIM
SensorsAccelerometer, Barometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Proximity Sensor
Touch ScreenYes
Main Display Size6.8" Full Rectangle / 6.6" Rounded Corners
Main Display Resolution3200 x 1440 (Quad HD+)
Main Display Color16M
Main Display FormatDynamic AMOLED 2X, 120Hz
Rear CameraQuad: 108 MP + 12 MP + 10 MP + 10 MP
Wide Angle: 108 MP Laser AF (f/1.8)
Telephoto 1: 10 MP AF (f/2.4)
Telephoto 2: 10 MP AF (f/4.9)
Ultra Wide: 12 MP AF (f/2.2)
Camera ZoomOptical Zoom at 3x and 10x, Digital Zoom up to 100x
FlashLED
HD Video CaptureUHD 8K (7680 x 4320)@24fps
Auto FocusYes
Front-Facing Camera40 MP
Operating SystemAndroid 11
System ChipQualcomm Snapdragon 888
Processor CoreOcta-core
Processor Speed2.84 GHz, 2.4 GHz, 1.8 GHz
RAM12GB
Storage128GB
Wi-Fi Support802.11 a/b/g/n/ac/ax 2.4G+5GHz+6GHz, HE160, MIMO, 1024-QAM, Wi-Fi Direct
ConnectivityYes
USBUSB 3.2 Gen 1 Type-C
Audio ConnectorsUSB Type-C
Bluetooth SupportBluetooth v5.2
Other ConnectionNFC
Battery Capacity5000mAh
Talk TimeUp to 37 hours
Operating TimeInternet Usage Time (LTE): Up to 18 hours
Internet Usage Time (Wi-Fi): Up to 18 hours
Audio Playback Time (Wireless): Up to 81 hours
Video Playback Time (Wireless): Up to 22 hours
GPS IntegratedGPS, Glonass, Galileo
AudioAudio Playing Format
MP3, M4A, 3GA, AAC, OGG, OGA, WAV, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA, DFF, DSF, APE
Additional FunctionWi-Fi/GPS/NFC
SpecificationsCorning Gorilla Glass Victus
IP68
S Pen Support
FeaturesContour Cut Camera Design
The real metal finish on the main camera adds unity to the design and accentuates the luxury of the haze texture. It's a bold new camera design in a category of its own.
High Resolution
The 108MP sensor gives you the highest resolution possible on a smartphone. Featuring all new 12-bit processing that offers a wider range of colors for crystal clear shots. And with nona-binning technology, it even helps take in more light for great exposures in dark scenes. 108MP for so much detail, you can crop, crop and crop again.
Space Zoom
The New Dual Zoom lens system
Dimensions (H x W x D)6.50" x 2.98" x 0.35"
Weight8.08 oz.
Package ContentsGalaxy S21 Ultra 5G
C to C Data Cable
Ejection Pin
Shipping weight0.45 kg
Package size229 × 152 × 76 mm

Other versions of this model

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Questions about this item

Does the phone accept a standard nano SIM or does it need a special tray?

It uses a nano SIM that fits into the combined SIM tray on the top edge.

What is the first step when setting up the device, and where do people get stuck?

Insert the nano SIM into the tray before powering on; skipping this step leaves the phone without mobile service.

Which component will need replacement after a few years of daily charging?

The built-in battery is not user-replaceable, so a service centre will need to swap it when capacity drops.

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