Samsung Galaxy S26 Ultra 256GB Black Unlocked Smartphone SM-S948UZKAXAA

Product Overview

The Samsung Galaxy S26 Ultra is a flagship Android smartphone introduced in 2026 as the largest model in Samsung’s Galaxy S26 series. The product identified by ASIN B0G4SWDH8P is the U.S. unlocked Black configuration with 256GB of internal storage and 12GB of RAM. Its manufacturer part number is SM-S948UZKAXAA, while the unlocked U.S. hardware family is identified as SM-S948U1.

The phone uses a 6.9-inch QHD+ Dynamic AMOLED 2X display with an adaptive refresh rate from 1Hz to 120Hz. Samsung also introduced a built-in Privacy Display system on the Ultra model, designed to reduce screen visibility from side viewing angles when enabled. Processing is handled by the Snapdragon 8 Elite Gen 5 Mobile Platform for Galaxy.

The rear camera system includes a 200MP wide camera, 50MP ultra-wide camera, 50MP 5x telephoto camera, and 10MP 3x telephoto camera. A 12MP camera is positioned on the front. The device also includes a 5,000mAh typical battery, wireless charging, reverse wireless charging, USB-C connectivity, integrated S Pen functionality, and IP68-rated water and dust resistance.

The 256GB configuration does not provide removable microSD storage. The device launched with Android 16 and Samsung One UI 8.5.

Product Information

Identification

Physical

Product Identifier Summary

• Model Number: The model number identifies a hardware family or regional device variant. It is commonly used for firmware, network compatibility, technical support, repairs, and accessory matching.
• MPN: The manufacturer part number identifies a specific commercial configuration. It can distinguish storage capacity, color, region, and unlocked or carrier-specific versions.
• UPC: The Universal Product Code identifies this packaged U.S. retail configuration and is commonly used in inventory, catalog, and barcode systems.
• EAN: The EAN is the corresponding international-format barcode identifier used in product databases and retail systems.
• GTIN: GTIN is the broader GS1 identification system encompassing barcode formats such as UPC and EAN. It is used to identify trade items across databases and supply chains.
• ASIN: This catalog identifier distinguishes the referenced Black 256GB product record from other storage, color, and configuration variants.
• ISBN: ISBN identifiers apply to books and certain publications and are not applicable to smartphones.

Key Features

• 6.9-inch QHD+ Dynamic AMOLED 2X display.
• Adaptive refresh rate from 1Hz to 120Hz.
• Peak display brightness rated at 2,600 nits.
• Built-in Privacy Display functionality.
• Snapdragon 8 Elite Gen 5 Mobile Platform for Galaxy.
• 12GB RAM.
• 256GB internal storage.
• Integrated S Pen.
• 200MP main wide camera.
• 50MP ultra-wide camera.
• 50MP 5x telephoto camera.
• 10MP 3x telephoto camera.
• 12MP front-facing camera.
• Optical zoom at 3x and 5x focal ranges.
• 5,000mAh typical battery.
• Super Fast Charging 3.0 support.
• Wireless charging.
• Reverse wireless charging.
• 5G cellular connectivity.
• Wi-Fi 7 support.
• Bluetooth connectivity.
• USB Type-C interface.
• Ultrasonic fingerprint authentication.
• IP68 water and dust resistance under controlled test conditions.

Technical Specifications

Package Contents

• Samsung Galaxy S26 Ultra smartphone.
• USB data cable.
• SIM ejection pin.
• Integrated S Pen.

A wall charging adapter is not included in the standard manufacturer package for this configuration.

Compatibility

The referenced configuration is an unlocked U.S. Galaxy S26 Ultra. Cellular compatibility depends on the intended network’s supported frequencies, IMEI policies, service plan, SIM or eSIM provisioning, and local coverage.

The device supports both physical Nano-SIM and eSIM technology. Available dual-SIM combinations and carrier features can vary according to software, network provider, and region.

Cases, screen protectors, camera protectors, and other fitted accessories should specifically identify compatibility with the Galaxy S26 Ultra. Accessories designed for earlier Ultra models should not be assumed to fit because dimensions and camera layouts differ between generations.

Wireless chargers must use a compatible charging standard. USB-C accessories should also be checked for their required charging, data-transfer, audio, or display capabilities.

Common Uses

• Voice calls and text messaging.
• 5G and LTE mobile connectivity.
• Web browsing and email.
• High-resolution photography.
• Ultra-wide photography.
• Telephoto and zoom photography.
• Video recording.
• Low-light photography and video.
• Handwritten notes using the integrated S Pen.
• Document annotation and drawing.
• Mobile gaming.
• Video and music streaming.
• Navigation and location services.
• Video conferencing.
• Mobile productivity and document management.
• Wireless charging.
• Charging compatible wireless accessories from the phone.
• Privacy-sensitive screen use with the built-in Privacy Display enabled.

Maintenance and Care

Clean the display and exterior with a soft, lint-free cloth. Avoid abrasive materials, aggressive cleaning chemicals, and excessive liquid around the USB-C connector, microphones, speakers, buttons, SIM area, and S Pen opening.

Allow the USB-C connector to dry completely before connecting charging equipment after exposure to moisture. Dirt or moisture trapped inside a connector can interfere with charging and may cause corrosion or other damage.

Water and dust resistance can diminish through normal wear, impact damage, disassembly, or repairs. Inspect the enclosure after significant drops or other physical damage.

Rechargeable lithium-ion batteries gradually lose usable capacity through age, heat, and charge cycles. Avoid storing the device for extended periods in unusually hot locations.

Back up important data before factory resets, repair work, major system changes, or ownership transfer. Install supported operating-system and security updates when available.

The S Pen should be returned to its storage slot when not in use. Keep the S Pen and its opening free of debris that could interfere with insertion or removal.

Safety Information

• IP68 resistance is based on controlled laboratory testing and should not be interpreted as permanent waterproofing.
• Water resistance can decrease through normal wear or physical damage.
• Do not charge the phone through USB-C while liquid remains inside the connector.
• Do not puncture, crush, burn, or intentionally disassemble the battery.
• Stop using the device if the battery swells or causes separation of the enclosure.
• Use compatible charging equipment that meets applicable electrical standards.
• Avoid prolonged exposure to excessive heat and direct heat sources.
• Keep the S Pen and other small removable components away from young children.
• Follow applicable laws concerning smartphone operation while driving.
• Use reasonable volume levels with headphones and personal audio equipment.

Product History

Samsung announced the Galaxy S26 series in February 2026. The family consists of the Galaxy S26, Galaxy S26+, and Galaxy S26 Ultra, with the Ultra serving as the largest and most camera-focused model in the series.

The Galaxy S26 Ultra continued Samsung’s Ultra product line while introducing a thinner 7.9 mm chassis and a built-in Privacy Display. The phone retained a 200MP-class primary camera and expanded the camera system with 50MP ultra-wide and 50MP 5x telephoto sensors.

The model followed the Galaxy S25 Ultra and retained the integrated S Pen concept associated with Samsung’s recent Ultra-series devices. Samsung also moved the Ultra generation to the Snapdragon 8 Elite Gen 5 Mobile Platform for Galaxy and introduced updated thermal management for sustained workloads.

Worldwide availability for the Galaxy S26 series began in March 2026.

Frequently Asked Questions

What product does B0G4SWDH8P identify?

It identifies the Samsung Galaxy S26 Ultra 256GB unlocked U.S. smartphone in Black.

What is the model number for this configuration?

The U.S. unlocked hardware family is SM-S948U1. The configuration-specific manufacturer part number is SM-S948UZKAXAA.

What UPC is associated with this configuration?

The verified UPC for the Black 256GB unlocked configuration is 198957240195.

Is this Galaxy S26 Ultra unlocked?

Yes. This configuration is designated as the U.S. unlocked version. Actual service compatibility should still be confirmed with the intended carrier.

Does the Galaxy S26 Ultra support 5G?

Yes. The device supports compatible 5G cellular networks. Network performance depends on the carrier, service plan, available frequencies, congestion, and local coverage.

Does it support microSD cards?

No. The Galaxy S26 Ultra does not provide removable microSD storage. Storage expansion therefore requires external or cloud-based solutions.

Does it include an S Pen?

Yes. An S Pen is integrated into the phone and stored inside the device when not being used.

What is Privacy Display?

Privacy Display is a built-in screen privacy function designed to reduce the visibility of selected screen content from side viewing angles. The user can control when and where the privacy effect is applied.

Does Privacy Display require a separate screen protector?

No. The privacy capability is integrated into the display system rather than depending on a removable privacy-filter accessory.

Does the phone support wireless charging?

Yes. Wireless charging is supported with compatible charging equipment.

Can the phone charge another wireless device?

Yes. Reverse wireless charging can supply power to compatible devices such as selected phones, earbuds, and wearables when operating conditions permit.

Does the Galaxy S26 Ultra include a charger?

The standard manufacturer package does not include a wall charging adapter. A compatible adapter is needed for wired charging.

Does the Galaxy S26 Ultra have four rear cameras?

Yes. The rear imaging system contains wide, ultra-wide, 3x telephoto, and 5x telephoto cameras.

What is the 200MP camera used for?

The 200MP wide camera serves as the primary rear camera and can capture high-resolution still images. Final output resolution can vary according to the selected camera mode.

Does the phone provide optical zoom?

Yes. Dedicated telephoto hardware provides 3x and 5x optical zoom positions.

Is the Galaxy S26 Ultra waterproof?

No consumer smartphone should be treated as permanently waterproof. The Galaxy S26 Ultra carries an IP68 water-and-dust-resistance rating under controlled laboratory conditions.

How large is the Galaxy S26 Ultra?

It is the largest model in the Galaxy S26 family, with a 6.9-inch display. Users comparing cases or other fitted accessories should use the exact Galaxy S26 Ultra model designation.

What operating system shipped with the phone?

The Galaxy S26 Ultra launched with Android 16 and Samsung One UI 8.5.

Does the phone require installation?

No hardware installation is normally required. Initial use involves charging the phone, activating a compatible SIM or eSIM, connecting to a network, signing into desired accounts, and completing Android setup.

Can data be transferred from an older smartphone?

Samsung Smart Switch can transfer supported contacts, photos, videos, messages, applications, settings, and other data from compatible devices. Available transfer categories vary by source device.

What warranty applies to this U.S. model?

The referenced new U.S. configuration is associated with Samsung’s applicable U.S. limited smartphone warranty. Coverage depends on the device, purchase documentation, warranty terms, and service eligibility.

Buying Considerations

• The 256GB configuration has fixed internal storage and no microSD expansion.
• The phone has a large 6.9-inch display and weighs 214 grams.
• Cases and fitted accessories should be specifically designed for the Galaxy S26 Ultra.
• A wall charging adapter is not included in the standard package.
• Maximum charging performance requires appropriately rated compatible charging equipment.
• Wireless charging performance depends on charger design, power source, temperature, and device alignment.
• Carrier compatibility should be confirmed before activation despite the unlocked designation.
• The IP68 rating should not be treated as permanent waterproofing.
• The integrated S Pen introduces an additional component that should be protected from loss or physical damage.
• Privacy Display changes off-angle visibility and can be enabled or adjusted according to the user’s viewing situation.

Customer Feedback Summary

This section is a generalized summary of recurring publicly reported customer and professional observations. These comments describe user experiences and should not be interpreted as verified product specifications.

Display quality is commonly discussed positively, particularly brightness, smooth scrolling, resolution, and the large viewing area. The integrated Privacy Display is also frequently noted because it can limit off-angle visibility without requiring a separate privacy screen accessory.

The camera system receives recurring positive attention for its range of focal lengths. Users commonly discuss the high-resolution main camera, ultra-wide coverage, and separate telephoto cameras as useful for moving between landscapes, everyday subjects, portraits, and distant objects.

Performance feedback frequently emphasizes fast application response, multitasking, gaming, and AI-assisted functions. Some users note that sustained high-performance workloads can increase heat and battery consumption, which is typical of powerful mobile processors.

The large display and integrated S Pen are commonly valued for note-taking, productivity, editing, and media use. The same large dimensions and 214-gram weight can be less convenient for users who prefer smaller or lighter smartphones.

Battery endurance is generally discussed positively for mixed everyday activity, while intensive camera use, gaming, navigation, high brightness, weak cellular signals, and extended 5G activity can shorten runtime. The lack of microSD expansion remains a limitation for users who prefer removable local storage.

Related Products

• Samsung Galaxy S26: Smaller standard model in the same Galaxy S26 generation.
• Samsung Galaxy S26+: Larger Galaxy S26 model positioned between the standard and Ultra versions.
• Samsung Galaxy S25 Ultra: Previous-generation Ultra model.
• Samsung Galaxy S24 Ultra: Earlier Ultra-series smartphone with integrated S Pen support.
• Samsung Galaxy Buds4: Wireless earbuds designed for integration with compatible Galaxy devices.
• Samsung Galaxy Buds4 Pro: Higher-tier wireless earbuds from the Galaxy Buds4 generation.
• Samsung Galaxy Watch: Wearable devices designed to pair with compatible Galaxy smartphones.
• Galaxy S26 Ultra cases: Model-specific protective accessories shaped for the phone’s dimensions and camera layout.
• USB Type-C charging accessories: Compatible cables and adapters for wired power and data connections.
• Wireless chargers: Compatible charging equipment for cable-free battery charging.

Last Updated

August 7, 2026