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Samsung SM-G998WZKEXAC Galaxy S21 Ultra 5G - 6. 8" Dynamic AMOLED QHD+ 120Hz - 256GB/12GB - Octa-core - Phantom Black
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Product Features
Technical Overview
At the core of the Galaxy S21 Ultra lies Samsung's Exynos 2100 chipset with an octa-core processor configuration. This includes a high-performance Cortex X1 core clocked at 2.90 GHz, three Cortex A78 cores at 2.80 GHz, and four Cortex A55 efficiency cores at 2.20 GHz. This tiered architecture balances raw power with energy efficiency across different workloads.
The device comes equipped with 12 GB of RAM and 256 GB of internal storage, providing ample space for applications, media, and documents. While there's no memory card slot for expansion, the generous built-in capacity accommodates extensive content libraries. The camera system features a sophisticated quad rear array with a 108-megapixel primary sensor capable of 8K video recording, supported by dual 10-megapixel telephoto lenses and a 12-megapixel ultra-wide sensor.
This section brings together practical product details such as Phone Style, Sensor Type, Virtual Assistant, Processor Manufacturer, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
The Galaxy S21 Ultra distinguishes itself through several premium features that enhance both productivity and entertainment. The combination of high-resolution cameras with advanced computational photography enables professional-quality imaging in various lighting conditions. The 40-megapixel front camera supports 4K video recording for crisp video calls and self-portraits.
Advanced Display Technology
The Dynamic AMOLED panel delivers vibrant colors, deep blacks, and HDR support with a 120Hz adaptive refresh rate that automatically adjusts based on content for optimal smoothness and battery efficiency.
- QHD+ resolution (3200 x 1440)
- 120Hz adaptive refresh rate
- 89.8% screen-to-body ratio
Comprehensive Connectivity
With support for 5G networks alongside extensive 4G LTE bands, this unlocked smartphone ensures reliable connectivity across North American carriers. Additional features include Wi-Fi, NFC for contactless payments, and GPS with multiple satellite systems.
- 5G and LTE Advanced
- Wi-Fi and NFC enabled
- Multi-SIM support (3 cards)
Deployment / Use Cases
The Galaxy S21 Ultra 5G serves as an ideal device for professionals who require a powerful mobile workstation with exceptional camera capabilities. Its unlocked status and multi-SIM support make it particularly valuable for frequent travelers who need to maintain connectivity across different regions without carrier restrictions.
Content creators will appreciate the 8K video recording capability and versatile camera system that handles everything from wide landscape shots to detailed close-ups. The large, high-refresh-rate display provides an excellent platform for mobile gaming, video editing, and reviewing high-resolution media. Business users benefit from the robust security features including ultrasonic fingerprint scanning and Samsung Knox protection.
Localization and Operating System
This Galaxy S21 Ultra ships with Android 11 as its operating system, providing access to the latest Android features and security updates. The unlocked, SIM-free configuration means the device isn't tied to any specific carrier, allowing users to choose their preferred service provider in Canada or internationally.
The device supports three Nano/eSIM combinations, offering flexibility for separating work and personal lines or using local SIM cards while traveling. With comprehensive network support including GSM, CDMA, UMTS, and LTE bands commonly used across North America, the smartphone maintains reliable connectivity in most regions.
Physical Profile
Measuring 6.50" (165.10 mm) in height, 2.98" (75.60 mm) in width, and just 0.35" (8.90 mm) in depth, the Galaxy S21 Ultra achieves a remarkable balance between large-screen viewing and comfortable handling. The Phantom Black finish presents a sophisticated, professional appearance suitable for both business and personal use.
Weighing approximately 8.01 oz (227 g), the device feels substantial without being cumbersome. The IP68 rating provides protection against dust ingress and water immersion up to 1.5 meters for 30 minutes, offering peace of mind in various environments. The ultrasonic fingerprint sensor is integrated directly into the display for seamless authentication.
- Width
- 2.98" (75.60 mm)
- Depth
- 0.35" (8.90 mm)
- Height
- 6.50" (165.10 mm)
- Weight
- 8.01 oz (227 g)
Highlights
- 6.8-inch Dynamic AMOLED QHD+ display with 120Hz refresh rate for smooth visuals
- Octa-core processor with Samsung Exynos 2100 chipset for powerful performance
- 256 GB internal storage with 12 GB RAM for multitasking and content storage
- 108MP quad rear camera system with 8K video recording capability
- 40MP front-facing camera supporting 4K video recording
- 5G connectivity with extensive LTE band support for reliable network access
- 5000 mAh battery providing up to 37 hours of talk time
- IP68 rating for dust and water resistance
- Unlocked, SIM-free configuration compatible with major Canadian carriers
- Phantom Black finish with ultrasonic in-display fingerprint sensor
Specifications
| Specifications | |
|---|---|
| Manufacturer | Samsung |
| Manufacturer Part Number | SMG998WZKEXAC |
| Brand Name | Samsung |
| Product Line | Galaxy S21 Ultra 5G |
| Product Model | SM-G998W |
| Product Name | Galaxy S21 Ultra 5G SM-G998W Smartphone |
| Product Type | Smartphone |
| Technical Information | |
| Phone Style | Bar |
| Sensor Type | Accelerometer,Barometer,Gyro Sensor,Geomagnetic Sensor,Hall Effect Sensor,Light Sensor,Proximity Sensor,Ultrasonic Fingerprint Sensor,Digital Compass,GPS |
| Virtual Assistant | Samsung Bixby |
| Wireless Charging | Yes |
| Processor | |
| Processor Manufacturer | ARM |
| Processor Type | Cortex X1 |
| Processor Speed | 2.90 GHz |
| Processor Core | Single-core (1 Core) |
| 2nd Processor Manufacturer | ARM |
| 2nd Processor Type | Cortex A78 |
| 2nd Processor Speed | 2.80 GHz |
| 2nd Processor Core | Triple-core (3 Core) |
| 3rd Processor Manufacturer | ARM |
| 3rd Processor Type | Cortex A55 |
| 3rd Processor Speed | 2.20 GHz |
| 3rd Processor Core | Quad-core (4 Core) |
| Combined Processor Core | Octa-core |
| Chipset | |
| Chipset Manufacturer | Samsung |
| Chipset Model | Exynos 2100 |
| Memory | |
| Built-in Memory | 256 GB |
| Standard Memory | 12 GB |
| Memory Card Slot | No |
| Display & Graphics | |
| Screen Size | 6.8" |
| Screen Type | Dynamic AMOLED |
| Screen Mode | QHD+ |
| Screen Resolution | 3200 x 1440 |
| Screen-to-body Ratio | 89.8% |
| Aspect Ratio | 20:9 |
| Standard Refresh Rate | 120 Hz |
| Maximum Frame Rate | 60 fps |
| Touchscreen Information | |
| Touchscreen | Yes |
| Camera | |
| Rear Camera | Quad |
| Rear Camera Resolution | 108 Megapixel |
| Second Rear Camera Resolution | 10 Megapixel |
| Third Rear Camera Resolution | 10 Megapixel |
| Fourth Rear Camera Resolution | 12 Megapixel |
| Rear Camera Video Recording Resolution | 8K |
| Front Camera | Single |
| Front Camera Resolution | 40 Megapixel |
| Front Camera Video Recording Resolution | 4K |
| Software | |
| Operating System | Android |
| Operating System Version | Android 11 |
| Network & Communication | |
| Service Provider | Unlocked |
| Contract Type | SIM-free |
| Multi-SIM Supported | Yes |
| Number of SIM Card Supported | 3 |
| SIM Size Supported | Nano/eSIM |
| Cellular Generation | 5G |
| Cellular Network Supported | GSM 850,GSM 900,GSM 1800,GSM 1900,CDMA 800,CDMA 1900,TD-SCDMA,HSDPA 850,HSDPA 900,HSDPA 1700,HSDPA 1900,HSDPA 2100,CDMA2000 (1xEV-DO),UMTS 2100,UMTS 1900,UMTS 850,UMTS 900,LTE 2100,LTE 1900,LTE 1800,LTE 850,LTE 2600,LTE 900,LTE 700,LTE 800,LTE 1500,LTE 2300,LTE 2500 |
| Cellular Data Connectivity Technology | LTE Advanced,LTE,EVDO,HSPA,HSDPA,EDGE,GPRS,UMTS |
| GPS Receiver | Yes |
| Wireless LAN | Yes |
| Near Field Communication | Yes |
| Battery Information | |
| Battery Talk Time | 37 Hours |
| Battery Capacity | 5000 mAh |
| Physical Characteristics | |
| Color Family | Black |
| Product Color | Phantom Black |
| Head SAR Value Maximum | 1.12 W/kg |
| Trunk SAR Value Maximum | 1.25 W/kg |
| Height | 6.50" (165.10 mm) |
| Width | 2.98" (75.60 mm) |
| Depth | 0.35" (8.90 mm) |
| Weight (Approximate) | 8.01 oz (227 g) |
| Miscellaneous | |
| Ingress Protection (IP) Rating | IP68 |
| Warranty | |
| Limited Warranty | 12 Month |
User Manual
FAQ
What cellular networks does this Samsung Galaxy S21 Ultra support?
The Galaxy S21 Ultra SM-G998WZKEXAC supports 5G networks along with extensive 4G LTE bands including LTE 2100, 1900, 1800, 850, 2600, 900, 700, 800, 1500, 2300, and 2500. It also maintains backward compatibility with GSM 850/900/1800/1900, CDMA 800/1900, UMTS 2100/1900/850/900, and HSPA networks. This comprehensive band support ensures reliable connectivity across most North American carriers and many international providers.
Can I expand the storage on this smartphone with a memory card?
No, this Galaxy S21 Ultra model does not include a memory card slot for storage expansion. The device comes with 256 GB of built-in storage, which provides substantial space for applications, photos, videos, and documents. For users requiring additional storage, cloud services or external storage solutions via USB-C connection would be appropriate alternatives.
What is the screen refresh rate and how does it benefit users?
The Galaxy S21 Ultra features a 120Hz refresh rate on its 6.8-inch Dynamic AMOLED display. This high refresh rate makes scrolling, gaming, and animations appear significantly smoother compared to standard 60Hz displays. The adaptive refresh technology automatically adjusts between 10Hz and 120Hz based on content being viewed, optimizing both visual smoothness and battery efficiency throughout daily use.
How many SIM cards can this smartphone support simultaneously?
This unlocked Galaxy S21 Ultra supports up to three SIM cards through a combination of physical Nano-SIM and eSIM configurations. This multi-SIM capability allows users to maintain separate lines for work and personal use, or to use local SIM cards while traveling internationally without needing to swap physical cards. The device's unlocked status ensures compatibility with various Canadian and international carriers.
What camera capabilities does the Galaxy S21 Ultra offer?
The smartphone features a sophisticated quad rear camera system with a 108-megapixel primary sensor, two 10-megapixel telephoto lenses, and a 12-megapixel ultra-wide sensor. This configuration supports 8K video recording at 24fps, along with various photography modes including night mode, portrait mode, and pro controls. The front-facing camera is a 40-megapixel sensor capable of 4K video recording for high-quality video calls and self-portraits.
Is this smartphone waterproof and what protection does it offer?
Yes, the Galaxy S21 Ultra carries an IP68 rating for ingress protection. This certification means the device is dust-tight and can withstand immersion in fresh water up to 1.5 meters deep for 30 minutes. While this provides protection against accidental spills, rain, and brief submersion, it's not designed for prolonged underwater use or exposure to high-pressure water streams. The rating offers practical protection for everyday scenarios.
How many SIP lines or accounts does this phone support?
Communication products are best understood through their line support, connectivity profile, and deployment fit. Those details help buyers confirm desk-phone or conference-room suitability before rollout.
What network or Ethernet connectivity is listed?
Communication products are best understood through their line support, connectivity profile, and deployment fit. Those details help buyers confirm desk-phone or conference-room suitability before rollout.
| Qty | Price | Available |
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