Xiaomi 15T Smartphone User Manual

1. Introduction and Overview

Welcome to the user manual for your new Xiaomi 15T smartphone. This guide provides essential information to help you get started, understand its features, and maintain your device. The Xiaomi 15T combines advanced photography capabilities with a powerful processor and an immersive display, designed for a seamless user experience.

Key features include:

• Leica Summilux Optical Lenses: For professional-grade photography.
• Immersive 6.83" 120Hz Eye-Care Display: Offering ultra-clear visuals with a 1.5K resolution.
• MediaTek Dimensity 8400-Ultra: Delivering powerful and efficient performance.
• Long-lasting 5,500 mAh Battery: Supported by 67W HyperCharge for quick power-ups.
• IP68 Rating: Ensuring enhanced water and dust resistance.
• Xiaomi 3D IceLoop System: For efficient heat dissipation and sustained performance.

2. What's in the Box

Upon unboxing your Xiaomi 15T, please verify that all the following items are present:

• Xiaomi 15T Smartphone
• USB-C Cable
• SIM Ejector Tool
• Silicone Cover
• Ring Holder (may vary by region/bundle)

Note: The charger is not included with this device and must be purchased separately.

3. Setup

3.1. Inserting the SIM Card

1. Locate the SIM card tray on the side of your Xiaomi 15T.
2. Insert the provided SIM ejector tool into the small hole next to the tray and press gently until the tray pops out.
3. Place your Nano-SIM card(s) into the tray with the gold contacts facing down. Ensure they are correctly seated.
4. Carefully push the tray back into the phone until it clicks into place.

3.2. Initial Power On and Setup

1. Press and hold the Power button (located on the right side of the device) until the Xiaomi logo appears.
2. Follow the on-screen instructions to select your language, region, connect to Wi-Fi, and set up your Google account.
3. You will be guided through setting up security features such as fingerprint unlock and facial recognition.

3.3. Charging the Device

The Xiaomi 15T supports 67W HyperCharge. For optimal charging speed, use a compatible 67W charger (not included). Connect the USB-C cable to your phone and the charger, then plug the charger into a power outlet.

• A full charge from 0% to 100% can be achieved in approximately 50 minutes with a compatible charger.
• The device features a 5,500 mAh (typical) battery, providing extended usage time.

4. Operating Your Xiaomi 15T

4.1. Display Features

The Xiaomi 15T features an immersive 6.83-inch 120Hz Eye-Care Display with a 1.5K resolution, offering stunning visuals and smooth scrolling. Key display specifications include:

• Pixel Density: 447 ppi
• Color Depth: 12-bit
• Contrast Ratio: 5,000,000:1
• Refresh Rate: 120Hz
• Touch Sampling Rate: 480Hz (up to 2560Hz instant touch sampling)
• Brightness: Up to 3200 nits peak brightness for optimal readability in all lighting conditions.

The display also incorporates advanced eye protection features, including 3840 Hz dimming, 16000 levels of automatic brightness, and adaptive colors to reduce eye strain. AI display features enhance user interaction with smart lock detection, intelligent Always-On-Display (AOD), and increased touch precision.

4.2. Camera System

The Xiaomi 15T features a versatile triple Leica camera system, designed for professional photography. It includes Leica Summilux optical lenses, offering exceptional clarity and detail even in low-light conditions.

• Triple Lens System: Covers a focal length range from 15mm to 92mm, allowing you to capture both wide landscapes and detailed close-ups.
• Telephoto Camera: Provides a natural perspective, ideal for portraits and capturing important moments with emotional depth.
• HDR10+: Ensures richer, more vibrant colors and realistic light and shadow performance across all focal lengths.
• Video Recording: Supports Log 10-bit LUT 4K 60fps, preserving maximum detail for creative post-production. Professional mode allows importing various LUTs for diverse tonal styles.

4.3. Performance

Powered by the MediaTek Dimensity 8400-Ultra processor, the Xiaomi 15T delivers powerful and smooth performance. This 4nm flagship processor, built with ARM® Cortex®-A725 Big-Core architecture, ensures exceptional performance and a super fluid user experience. Enhanced fluidity is further supported by LPDDR5X RAM and UFS 4.1 storage.

4.4. Connectivity

The Xiaomi 15T supports 5G connectivity. With the internally developed Xiaomi Surge T1S tuner and Super Antenna Array, the device optimizes Wi-Fi, Bluetooth, GPS, and cellular signals across 16 scenarios, ensuring a smoother and smarter connection anytime, anywhere.

4.5. Software

The Xiaomi 15T runs on Xiaomi HyperOS, offering a highly customizable and efficient operating system. It also integrates with Google Gemini, providing a personal AI assistant to enhance your productivity and creativity.

5. Maintenance

5.1. Cooling System

The Xiaomi 15T features the Xiaomi 3D IceLoop System. This advanced cooling system adheres perfectly to the chip for rapid heat dissipation, ensuring efficient cooling and consistent performance even during intensive use.

5.2. Water and Dust Resistance

The Xiaomi 15T boasts an IP68 rating, indicating improved water and dust resistance. It can withstand immersion in water up to 3 meters deep. While designed to be robust, avoid intentional exposure to water and always ensure ports are dry before charging.

6. Troubleshooting

If you encounter any issues with your Xiaomi 15T, consider the following general troubleshooting steps:

• Restart the Device: A simple restart can often resolve minor software glitches.
• Check Connections: Ensure Wi-Fi, Bluetooth, or cellular data are properly enabled and connected.
• Update Software: Make sure your device is running the latest version of HyperOS. Go to Settings > About phone > System update.
• Clear Cache: If an app is misbehaving, try clearing its cache in Settings > Apps > [App Name] > Storage > Clear cache.
• Factory Reset: As a last resort, you may perform a factory reset. Warning: This will erase all data on your phone. Back up important data before proceeding.

For more specific issues, refer to the official Xiaomi support website or contact customer service.

7. Specifications

Below are the detailed technical specifications for the Xiaomi 15T smartphone:

8. Warranty and Support

Your Xiaomi 15T smartphone comes with a 2-year warranty, covering manufacturing defects and ensuring peace of mind. For warranty claims or technical support, please refer to the official Xiaomi website or contact your local authorized service center.

For the latest software updates, FAQs, and additional support resources, visit the official Xiaomi support page: www.mi.com/global/support