The Xiaomi 15 Ultra features a sophisticated design that balances aesthetics with durability. The device sports a ceramic back panel available in Cosmic Black, Lunar White, and Forest Green colorways, with a premium aluminum frame featuring titanium elements for enhanced structural integrity.
At 8.4mm thick and weighing 215g, the device is substantial but remains comfortable to hold thanks to carefully considered ergonomics. The front and back surfaces feature Corning’s latest Gorilla Glass Armor for exceptional scratch and drop resistance, while the IP68 rating ensures protection against dust and water immersion.
The phone’s design language emphasizes premium materials and precision engineering, with subtle curves and a distinctive circular camera module that sets it apart from competitors. The attention to detail extends to the tactile feedback of the buttons and the symmetrical speaker grilles, demonstrating Xiaomi’s commitment to refinement.
Xiaomi 15 Ultra Display
The centerpiece of the Xiaomi 15 Ultra is its exceptional 6.8-inch micro-curved LTPO AMOLED display. This panel pushes mobile display technology to new heights with:
- 2K resolution (3200 x 1440 pixels) with 522 PPI
- Variable refresh rate from 1-144Hz for optimal performance and efficiency
- 10-bit color depth supporting 1.07 billion colors
- Peak brightness of 3,000 nits for exceptional outdoor visibility
- HDR10+, Dolby Vision, and HLG support
- 2160Hz high-frequency PWM dimming for reduced eye strain
- Xiaomi’s ProXDR technology for enhanced contrast and color accuracy
The display is protected by Corning Gorilla Glass Armor and features an ultrasonic fingerprint sensor embedded beneath the screen, offering fast and reliable authentication even with wet fingers.
Xiaomi 15 Ultra Performance
Powering the Xiaomi 15 Ultra is Qualcomm’s Snapdragon 8 Gen 4 chipset, manufactured on TSMC’s 3nm process. This flagship processor delivers exceptional performance with its:
- 1+3+4 CPU configuration with a prime core clocked at 3.3GHz
- Adreno 830 GPU offering 45% improved graphics performance over the previous generation
- Dedicated AI processing unit delivering 35 TOPS of AI performance
The sophisticated cooling system combines a vapor chamber with graphene layers and copper heat pipes to maintain optimal temperatures even under sustained loads.
Memory configurations include 12GB/256GB, 16GB/512GB, and a range-topping 16GB/1TB variant, all utilizing LPDDR5X RAM and UFS 4.0 storage for lightning-fast data access. The absence of expandable storage is mitigated by the generous internal storage options.
Xiaomi 15 Ultra Camera System
The camera system on the Xiaomi 15 Ultra was developed in collaboration with Leica and represents one of the most versatile mobile photography setups available:
- Main: 50MP 1-inch Sony IMX989 sensor with OIS, f/1.6 aperture, and 23mm equivalent focal length
- Ultrawide: 50MP Samsung JN1 sensor with 114° field of view, f/2.2 aperture, and autofocus capability
- Telephoto (3x): 50MP Sony IMX858 with OIS, f/2.0 aperture, and 75mm equivalent focal length
- Periscope (5x): 50MP Sony IMX858 with OIS, f/2.8 aperture, and 120mm equivalent focal length
- Front camera: 32MP sensor with autofocus and f/2.0 aperture
The sophisticated camera hardware is complemented by Xiaomi’s computational photography algorithms and Leica’s color science, offering two distinct photographic styles: Leica Authentic and Leica Vibrant. Additional features include:
- 8K video recording at 30fps
- 4K video at up to 120fps with Dolby Vision support
- Advanced stabilization combining OIS and EIS
- Pro mode with RAW capture and manual controls
- Motion tracking focus
- Advanced night mode capabilities
- Cinematic portrait video with real-time bokeh
Xiaomi 15 Ultra Battery and Charging
The Xiaomi 15 Ultra houses a 5,500mAh silicon-carbon battery, offering improved energy density compared to traditional lithium-ion cells. This capacity, combined with the efficient Snapdragon chipset and adaptive display, provides exceptional battery life.
Charging capabilities include:
- 120W HyperCharge wired charging (0-100% in 21 minutes)
- 50W wireless charging with compatible Xiaomi wireless chargers
- 10W reverse wireless charging for accessories
The device also features Xiaomi’s Battery Health Engine, which adaptively manages charging parameters to preserve long-term battery health, promising over 1,600 charge cycles with minimal degradation.
Xiaomi 15 Ultra Software and User Experience
The Xiaomi 15 Ultra runs HyperOS 2.0 based on Android 15, representing a significant evolution of Xiaomi’s software approach. The interface balances feature richness with intuitive design, offering:
- Refined Material You implementation with advanced customization options
- Xiaomi’s AI Assistant with on-device processing for enhanced privacy
- Advanced multitasking capabilities including floating windows and split-screen
- Game Turbo mode with performance optimization and notification management
- Privacy and security dashboard with comprehensive permission controls
- Cross-device connectivity within the Xiaomi ecosystem
Xiaomi has committed to 4 years of OS updates and 5 years of security patches for the 15 Ultra, addressing previous concerns about long-term software support.
Xiaomi 15 Ultra Audio Capabilities
Audio performance on the Xiaomi 15 Ultra is handled by stereo speakers tuned by Harman Kardon, delivering rich, balanced sound with Dolby Atmos support. While the device lacks a 3.5mm headphone jack, it offers:
- Hi-Res Audio certification for both wired (via USB-C) and wireless playback
- LDAC, LHDC 5.0, and aptX Adaptive codec support for high-quality Bluetooth audio
- Spatial audio capabilities with head tracking when using compatible earphones
- Advanced audio processing for improved call quality and voice recording
Xiaomi 15 Ultra Connectivity
The Xiaomi 15 Ultra offers comprehensive connectivity options:
- 5G support with mmWave and sub-6GHz compatibility
- Wi-Fi 7 with 4K QAM and Multi-Link Operation
- Bluetooth 5.4 with dual antenna design
- Ultra-Wideband (UWB) chip for precise spatial awareness
- NFC for contactless payments and device pairing
- Infrared blaster for controlling home appliances
- Dual-frequency GPS, GLONASS, BeiDou, Galileo, and QZSS
The device supports dual SIM functionality (physical nano-SIM + eSIM) for users who maintain multiple numbers.
Xiaomi 15 Ultra Special Features
Several features distinguish the Xiaomi 15 Ultra from competitors:
- Advanced haptic engine providing nuanced tactile feedback
- Multi-functional NFC with expanded capabilities beyond payments
- AI-powered performance optimization that learns from usage patterns
- Xiaomi Hyper Charge ecosystem compatibility
- XBoost performance mode for demanding applications
- Advanced privacy features including on-device AI processing
Xiaomi 15 Ultra Price and Market Positioning
The Xiaomi 15 Ultra is positioned as a premium flagship, with pricing as follows:
- 12GB/256GB: $1,199/€1,199/£1,099
- 16GB/512GB: $1,299/€1,299/£1,199
- 16GB/1TB: $1,399/€1,399/£1,299
While this pricing places it in direct competition with premium offerings from Apple and Samsung, Xiaomi emphasizes the value proposition through superior specifications and feature set.
Xiaomi 15 Ultra Comparison with Competitors
When compared to contemporary flagships, the Xiaomi 15 Ultra offers several distinct advantages:
- More versatile camera system than the iPhone 16 Pro Max
- Faster charging capabilities than the Samsung Galaxy S25 Ultra
- Superior display specifications compared to most competitors
- More generous memory configurations at comparable price points
However, challenges include more limited availability in some markets and ecosystems that are not as developed as those from Apple and Samsung.
Xiaomi 15 Ultra Reception and Reviews
Early reviews of the Xiaomi 15 Ultra have been overwhelmingly positive, with particular praise for the camera system, display quality, and charging capabilities. Professional reviewers have highlighted the improvement in software experience with HyperOS 2.0, noting reduced bloatware and more intuitive interface design compared to previous generations.
The device has garnered recognition for pushing hardware boundaries while maintaining a cohesive user experience, though some reviewers have noted that the premium pricing places it in a highly competitive segment where brand perception plays a significant role.
Xiaomi 15 Ultra
The Xiaomi 15 Ultra represents the pinnacle of smartphone technology in 2025, successfully balancing cutting-edge hardware with refined software. For users seeking the absolute best in mobile photography, display technology, and performance, this device makes a compelling case as a premium flagship option.
While the premium pricing may give some potential buyers pause, the comprehensive feature set and exceptional specifications justify the investment for those who prioritize smartphone capabilities. As Xiaomi continues to expand its global presence and ecosystem, the 15 Ultra stands as a testament to the company’s technical prowess and ambition to compete at the highest level of the smartphone market.