1. Introduction
This manual provides essential instructions for setting up, operating, and maintaining your XIAOMI Redmi 15 4G LTE smartphone. Please read this manual thoroughly before using your device to ensure proper functionality and safety.
Figure 1: XIAOMI Redmi 15 4G LTE Smartphone (Sandy Purple)
The XIAOMI Redmi 15 is designed for reliable mobile communication and multimedia experiences, featuring a 6.9-inch display, 50MP AI dual camera, and a large 7000mAh battery.
2. Setup
2.1. SIM Card and Micro SD Card Installation
The device supports Dual Nano SIM cards and one Micro SD card for expanded storage. Ensure the device is powered off before inserting or removing cards.
- Locate the SIM card tray on the side of the device.
- Insert the SIM ejector tool into the small hole on the tray to open it.
- Place your Nano SIM cards and/or Micro SD card into the designated slots on the tray, ensuring correct orientation.
- Gently push the tray back into the device until it clicks into place.
2.2. Powering On/Off
- To power on: Press and hold the Power button until the XIAOMI logo appears.
- To power off: Press and hold the Power button, then select 'Power off' from the options on the screen.
2.3. Initial Configuration
Upon first power-on, follow the on-screen prompts to complete the initial setup, including language selection, network connection, and account setup.
3. Operating Instructions
3.1. Display Features
The Redmi 15 features a 6.9-inch FHD+ DotDisplay with a resolution of 2340 × 1080 pixels and a pixel density of 374 PPI. The refresh rate is up to 144Hz for supported applications, providing a smooth visual experience. The display offers a brightness of 700 nits (typical) and 850 nits HBM, with a contrast ratio of 1400:1 and 85% NTSC color gamut. It includes Reading mode and is TÜV Rheinland Low Blue Light (Software Solution) Certified, TÜV Rheinland Circadian Friendly Certified, and TÜV Rheinland Flicker Free Certified for eye comfort.
3.2. User Interface
The device operates on Xiaomi HyperOS based on Android 15, offering an intuitive and customizable user experience. Navigation is primarily via the touchscreen interface.
3.3. Basic Functions
- Calls: Use the Phone app to make and receive calls.
- Messages: Send and receive text messages using the Messaging app.
- Internet: Access the internet via Wi-Fi or mobile data using the pre-installed browser or other applications.
- Audio: Connect headphones via the 3.5mm audio jack for private listening.
4. Connectivity
4.1. Network Compatibility
For users in the USA, this device is compatible with T-Mobile and Mint networks (requires previous SIM card activation). Outside the USA, it supports 4G VoLTE worldwide unlocked Dual Nano SIM. The FCC ID is 2AFZZRN2DL.
Figure 2: Network Compatibility Overview
Supported network bands include:
- 2G: GSM: 2/3/5/8
- 3G: WCDMA: 1/5/8
- 4G: LTE FDD: 1/2/3/4/5/7/8/20/28
- 4G: LTE TDD: 38/40/41
4.2. Wireless Connectivity
- Wi-Fi: Supports 2.4GHz and 5GHz bands.
- Bluetooth: Version 5.1 for connecting wireless accessories.
- GPS: Integrated GPS, AGPS, GLONASS, Beidou, and Galileo for accurate location services.
5. Battery & Charging
The Redmi 15 is equipped with a massive 7000mAh (typical) battery, designed for extended usage. It supports 33W turbo charging to quickly replenish the battery. A 33W wall charger is included in the box.
6. Camera
6.1. Rear Camera System
The device features a 50MP AI dual camera system:
- Main Camera: 50MP with 5P lens and f/1.8 aperture.
- Auxiliary Lens: For enhanced depth and detail.
- Rear Camera Video Recording: Supports 1080p (1920x1080) HD video recording at 30 fps and 720p (1280x720) HD video recording at 30 fps.
6.2. Front Camera
The front camera is 8MP with an f/2 aperture, supporting various features:
- FilmCamera
- HDR mode
- Soft-light ring
- Portrait mode
- Time-lapse
- Front Camera Video Recording: Supports 1080p (1920x1080) HD video recording at 30 fps and 720p (1280x720) HD video recording at 30 fps.
7. Performance
The Redmi 15 is powered by the Snapdragon 685 processor, ensuring smooth operation for daily tasks and applications. It comes with 6 GB of RAM and 128 GB of internal storage.
8. Maintenance
8.1. Dust and Water Resistance
The device features IP64 dust and water resistance, providing protection against splashes and dust ingress. However, it is not designed for submersion in water. Avoid exposing the device to excessive moisture or dust.
8.2. General Care
- Keep the device clean using a soft, dry cloth.
- Avoid extreme temperatures and direct sunlight.
- Protect the screen with a screen protector and use the included phone case to prevent scratches and damage.
9. Troubleshooting
If you encounter any issues with your Redmi 15, try the following basic troubleshooting steps:
- Device not turning on: Ensure the battery is charged. Connect the charger and try again.
- Apps freezing/crashing: Close the app and reopen it. If the issue persists, restart the device.
- Network connectivity issues: Check if your SIM card is properly inserted. Toggle Airplane Mode on and off. Restart the device.
- Slow performance: Close unnecessary background apps. Clear cache and temporary files.
For more complex issues, refer to the official XIAOMI support website or contact customer service.
10. Specifications
| Feature | Specification |
|---|---|
| Model Name | 25062RN2DL |
| Brand | XIAOMI |
| Operating System | Xiaomi HyperOS based on Android 15 |
| CPU Model | Snapdragon 685 |
| RAM | 6 GB |
| Memory Storage Capacity | 128 GB |
| Screen Size | 6.9 Inches |
| Resolution | 2340 × 1080 |
| Refresh Rate | 144 Hz |
| Rear Camera | 50MP AI Dual Camera |
| Front Camera | 8MP |
| Battery Capacity | 7000 Milliamp Hours (mAh) |
| Charging | 33W Turbo Charging |
| Connectivity Technologies | Wi-Fi (2.4GHz | 5GHz), Bluetooth 5.1 |
| GPS | True (GPS, AGPS, GLONASS, Beidou, Galileo) |
| Audio Jack | 3.5 mm |
| Special Features | Dual Camera, Rear fingerprint sensor, AI face unlock, IP64 Dust and Water Resistance |
| Color | Sandy Purple |
| Item Weight | 6 ounces |
| Package Dimensions | 7.83 x 6.54 x 2.44 inches |
11. What's in the Box
The following items are included with your XIAOMI Redmi 15:
- XIAOMI Redmi 15 Smartphone
- Adapter
- Phone Case
- 33W Wall Charger
- 18W Wall Charger
- 33W Car Charger
Figure 3: Included Accessories
12. Warranty & Support
For warranty information and customer support, please refer to the warranty card included in your product packaging or visit the official XIAOMI website. Keep your proof of purchase for warranty claims.
