Xiaomi 15Ultra Full Review: Flagship Camera with Full Features

Introduction

The Xiaomi 15 Ultra is the pinnacle of innovation in Xiaomi's 2025 flagship line. This device is designed for users who want a smartphone with professional camera capabilities, a premium display, high performance, and exceptional battery life. Compared to the Xiaomi 15 and Xiaomi 15 Pro series, the Ultra variant brings improvements in almost every area.

Design & Display

The Xiaomi 15 Ultra features a bold design with a large rear camera module. The device's dimensions feel solid yet comfortable to hold. The body uses premium materials with a choice of glass or vegan leather on the back, combined with a strong aluminum frame. IP68 certification ensures water and dust resistance, making it safe to use in various conditions.

The display uses a 6.73-inch LTPO AMOLED panel with WQHD+ resolution and an adaptive refresh rate of up to 120Hz. Peak brightness reaches 3,200 nits, keeping the screen clear even in bright sunlight. HDR10+ and Dolby Vision support provide the best visual experience when watching movies or playing games.

Performance & Hardware

This device is powered by the Snapdragon 8 Elite (3nm) chipset combined with the latest GPU. This combination delivers incredibly fast performance for all usage scenarios, from multitasking and heavy gaming to video editing.

The Xiaomi 15Ultra comes with 12GB and 16GB LPDDR5X RAM variants, along with up to 1TB of UFS4.0 internal storage. An enhanced cooling system keeps the device stable even during extended use. The optimized Android 15-based HyperOS ensures a smooth user experience with long-term updates.

Camera & Video

The camera features are the main attraction of the Xiaomi 15Ultra. The rear camera system consists of four Leica lenses:

• A 50MP main camera with a 1-inch sensor, variable aperture of f/1.6–f/4.0, and OIS.
• A 50MP ultra-wide camera with wide-angle and macro capabilities.
• A 50MP telephoto camera with 3x optical zoom.
• A 200MP periscope camera with 4.3x optical zoom and up to 120x digital zoom.

The 32MP front camera offers clear selfies and video recording up to 4K. All cameras support 8K 30fps or 4K 120fps video recording with OIS + EIS stabilization, making them ideal for content creators.

Photos from the main camera are incredibly sharp with a wide dynamic range. Night mode is further enhanced by the latest image processing technology. Telephoto and periscope lens variants provide incredible flexibility for long-distance shooting.

Battery & Charging

The Xiaomi 15Ultra packs a large 6,000mAh battery that can last a full day, even for heavy users. This battery life is supported by the chipset's efficiency and the LTPO display, which can adjust the refresh rate as needed.

The charging capabilities are also impressive. The Xiaomi 15Ultra supports 90W wired fast charging, which can fully charge in less than an hour. Additionally, there's 80W wireless charging and 10W reverse wireless charging for charging other devices.

Connectivity & Additional Features

This device is equipped with comprehensive connectivity, including 5G, Wi-Fi 7, the latest Bluetooth version, NFC, and a USB-C 3.2 port with fast data transfer capabilities. The Xiaomi 15Ultra also supports two-way satellite communication for emergency situations in areas with no cellular signal.

Security features include a fast and accurate under-display ultrasonic fingerprint sensor. Stereo speakers with Dolby Atmos and Hi-Res Audio support provide an immersive multimedia experience.

HyperOS 2 brings the latest AI features such as automatic photo editing, smart scheduling, and machine learning-based power optimization.

User Experience

The Xiaomi 15 Ultra delivers a consistent experience across all aspects. The sharp, responsive, and bright display makes it a pleasure to consume content. Its powerful performance is capable of running AAA games smoothly and without lag.

The camera system offers complete flexibility, from landscape shots to close-ups with incredible detail. Photography enthusiasts will be very satisfied with the resulting image quality.

Battery life is very strong, while fast charging allows users to quickly top up before returning to their activities. The increasingly lightweight HyperOS also simplifies daily app setup and management.

Pros

• Advanced camera with a large sensor and high optical zoom.
• 6.73-inch AMOLED display with WQHD+ resolution and high brightness.
• Fast and efficient Snapdragon 8 Elite performance.
• Large battery with 90W wired and 80W wireless fast charging.
• Premium design with IP68 certification.
• Satellite communication features, high-quality audio, and comprehensive connectivity.

Cons

• The large camera module makes the device thicker and heavier.
• There's no microSD slot or 3.5mm audio port.
• Fast charging can make the device feel warm.
• The price is quite high compared to other flagships.

Is it worth buying?

The Xiaomi 15Ultra is a great choice for users who want a smartphone with top-notch camera capabilities, premium performance, and comprehensive features. For mobile photographers or content creators who need lens flexibility and professional-grade image quality, this device is highly recommended.

However, for those looking for a lighter device or those who don't need advanced camera features, the Xiaomi 15Pro variant might be a more affordable alternative.

Conclusion

The Xiaomi 15Ultra proves itself to be one of the best flagships of 2025. The combination of a Leica camera, fast performance, a premium display, a large battery, and modern features makes it superior in almost every category. Minor drawbacks, such as its relatively heavy weight and high price, are well-rewarded by the capabilities it offers.

If you're looking for a smartphone that can replace a professional camera with a complete package, the Xiaomi 15Ultra is a hard choice to beat.