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Samsung Galaxy S21 Ultra 5G silver glass slab with large camera module

SAMSUNG

SAMSUNG Galaxy S21 Ultra 5G G998U 128GB Silver

SKU CH-ZK9G-HVHMD

A 6.8 inch AMOLED phone with a 108 MP camera, 100X zoom, 5G and IP68 water resistance

  • CPU2.9 GHz Octa-core
  • Storage drive128 GB
  • ProcessorQualcomm Snapdragon
  • Connection optionsYes
  • Operating systemAndroid
  • Form factorTouch Screen Phones
  • Highest-resolution smartphone camera at 108 MP for stunning detail
  • Pull 33 MP stills directly from 8K video with a single tap
  • Adaptive 6.8" Dynamic AMOLED display shifts 10 Hz to 120 Hz for smooth scrolling
  • Snapdragon 888 processor powers 5G speeds on all major US carriers
  • IP68 water resistance protects against dust and immersion

Unlocked 5G flagship with 128 GB storage

The Samsung Galaxy S21 Ultra 5G G998U is a fully unlocked smartphone supporting Verizon, Sprint, AT&T, T-Mobile and major MVNOs. It ships new with a UL approved power adapter and charging cable. The device runs Android 12 with Samsung One UI on a Snapdragon 888 processor.

Photographers needing 8K video extraction

Buyers who want to capture 33 MP stills from 8K footage will benefit from the 108 MP rear camera and 100X zoom. Users who require a headphone jack, bundled headphones, a SIM ejector tool or the original retail box should look at other options.

6.8 inch Dynamic AMOLED at 3200 x 1440

The display delivers HDR support, a 10 Hz to 120 Hz adaptive refresh rate and Corning Gorilla Glass Victus protection. This panel size and resolution define the viewing experience and battery draw from the 5000 mAh cell.

How it compares

Measured against everything we stock in No-Contract Smartphones, at today’s prices. Recalculated every night.

Price $216.99
Pricier than about 60% of the 646 comparable items (median $180.49).
Storage drive 128 GB
Typical for this category: the median of 506 items is 128 GB.

Specifications

Product
Brand nameSamsung
Product lineGalaxy S21 Ultra 5G
Model nameG998U
Part numberG998U
Product typeCell Phone
Product colorSilver
Processor
CPU2.9 GHz Octa-core
ProcessorQualcomm Snapdragon
Processor chipQualcomm Snapdragon 888 5G
Core configurationOcta-core
CPU clock speed2.9 GHz
Memory
RAM capacity12 GB
Storage
Storage drive128 GB
Display
TouchscreenYes
Main screen size6.8 in (17.3 cm)
Display technologyAMOLED
Screen resolution3200 × 1440
Audio & video
Back camera108 MP
Camera flashYes
Zoom capability100X
AutofocusYes
Video recording8K
Selfie camera40 MP
Connectivity
Connection optionsYes
Technology type5G
Data connectionLTE-A (7CA) Cat20 2000/200 Mbit/s, 5G (5+ Gbps DL)
SIM typeNano SIM
Wi-Fi capabilityWi-Fi 802.11 a/b/g/n/ac/6e
BluetoothYes
Built-in GPSYes
Messaging servicesSMS, MMS, Email, Push Email, IM
Extra radiosWi-Fi/GPS/NFC
4G networkCDMA LTE
Ports & slots
Expansion slotNone
HDMI portsNo
Power
Battery typeNon-removable Li-Ion Battery
Battery capacity5,000 mAh
Talk duration20–30 h
Standby duration360 h
Charging optionsFast Charging / Wireless Charging
Run timeUp to 8 h on 3G, Up to 8 h on Wi-Fi
Size & build
Form factorTouch Screen Phones
Overall dimensions6.5 in × 2.98 in × 0.35 in
Product weight8.01 oz
Compatibility
Carrier compatibilityVerizon, Sprint, AT&T, T-Mobile, Cricket, MetroPCS, Mint Mobile, Consumer Cellular, Boost Mobile, GSM Networks
Environment & compliance
Water resistanceIP68
Software
Operating systemAndroid
Email supportEmail, Push Email
More details
Phonebook entries1000
QWERTY keyboardYes

Questions about this item

Will the 5000mAh battery need replacement and how often?

The 5000mAh battery is sealed inside the chassis. Normal capacity loss after a few hundred charge cycles may eventually require professional service.

Which component hits its limit first during hours of 8K video recording?

The Snapdragon 888 processor and 108MP sensor generate sustained heat; thermal throttling typically activates before storage or memory fill.

How loud or hot does the phone get when the 120Hz display runs all day?

The adaptive 10Hz–120Hz panel and large vapor chamber keep surface temperature warm but not uncomfortable; fanless design means zero audible noise.

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