Samsung SM-S721UZKAXAA

Overview

The Samsung SM-S721UZKAXAA is a smartphone designed to deliver a balanced mix of speed, durability, and versatile features. It runs on the Exynos 2400e processor paired with 8GB of RAM and 128GB of storage, ensuring smooth multitasking and ample space for apps and media. The 6.7-inch AMOLED display with a 120Hz refresh rate offers vibrant colors and fluid visuals, making it suitable for gaming, streaming, and everyday use. With a 50-megapixel rear camera and 10-megapixel front camera, it captures detailed photos and videos, while 5G connectivity keeps you connected with fast data speeds.

Key features

• 6.7-inch AMOLED display with 120Hz refresh rate for smooth scrolling and vivid visuals
• Exynos 2400e processor delivering responsive performance for multitasking and apps
• 50MP rear camera with AI enhancements for clear photos and 4K video recording
• 10MP front camera optimized for sharp selfies and video calls
• 4700mAh battery supporting both wired fast charging and wireless charging options
• IP68 rating providing reliable protection against water and dust exposure
• Dual SIM capability with Nano SIM and eSIM for flexible carrier use and travel
• Samsung Knox security platform to protect sensitive data and privacy
• Integration with SmartThings for smart home control and Samsung DeX for desktop-style productivity
• AI-powered tools for image editing, real-time translation, and note organization to enhance productivity

Key specs

• Processor: Exynos 2400e with up to 3.1GHz peak speed
• Memory: 8GB RAM
• Storage: 128GB internal
• Display: 6.7-inch AMOLED, 2340 x 1080 resolution, 120Hz refresh rate
• Rear camera: 50 megapixels, 4K video recording
• Front camera: 10 megapixels
• Battery: 4700mAh with wired fast charging and wireless charging support
• Connectivity: 5G, Nano SIM and eSIM support
• Durability: Aluminum frame, Corning Gorilla Glass Victus+, IP68 water and dust resistance

Connectivity and compatibility

This smartphone supports 5G networks for fast internet access and low latency, making it suitable for streaming, gaming, and video calls. The dual SIM setup allows you to use a physical Nano SIM alongside an eSIM, which is ideal for travelers or users managing separate work and personal numbers. It also integrates seamlessly with Samsung’s ecosystem, including SmartThings for smart home devices and Samsung DeX for connecting to external displays and using a desktop-like interface.

Performance and reliability

The Exynos 2400e processor combined with 8GB of RAM ensures responsive performance across everyday tasks and demanding apps. The 4700mAh battery supports a full day of use and offers flexible charging options, including wireless charging for convenience. The device’s build quality features an aluminum frame and Gorilla Glass Victus+ for enhanced durability, while the IP68 rating protects against water and dust, making it a dependable choice for various environments.

Ideal uses and environments

This model fits well for users who need a reliable smartphone for both work and leisure. Its large, high-refresh-rate display is excellent for media consumption and gaming, while the powerful camera system supports photography and video creation. The security features and Samsung DeX compatibility make it a strong option for mobile professionals and students who require productivity on the go. Its water and dust resistance also make it suitable for outdoor use and travel.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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