1. Introduction
The XIAOMI Redmi 15 5G NFC is a feature-rich smartphone designed for reliable performance and an immersive user experience. This manual provides essential information for setting up, operating, and maintaining your device.
Key features include:
- Massive 7000mAh (typ) battery for extended usage.
- Powered by Snapdragon® 6s Gen 3 with 5G for fast and reliable performance.
- Immersive 6.9" FHD+ display with up to 144Hz high refresh rate.
- Quad-curved design for comfort in hand.
- IP64 dust and water resistance.
- 50MP AI dual camera system with creative AI tools.
- Up to 16GB RAM with Memory extension for smoother performance.
2. Setup
2.1. Package Contents
Before you begin, ensure all items are present in the box:
- XIAOMI Redmi 15 5G NFC Smartphone
- Phone Case
- USB Cable
- SIM Ejector Tool (usually found with documentation)
2.2. Inserting SIM Card(s) and MicroSD Card
The Redmi 15 5G NFC supports Dual SIM functionality and a hybrid slot for either a second SIM or a microSD card.
- Locate the SIM tray on the side of the device.
- Insert the SIM ejector tool into the small hole next to the tray and push gently until the tray pops out.
- Place your Nano-SIM card(s) and/or microSD card into the designated slots on the tray. Ensure the gold contacts are facing down.
- Carefully push the tray back into the device until it is flush with the side.
Figure 1: Side view of the Redmi 15 5G NFC, highlighting the SIM card tray location.
2.3. Powering On/Off
- To Power On: Press and hold the Power button (located on the side) until the Xiaomi logo appears.
- To Power Off: Press and hold the Power button until the power options appear on the screen, then tap "Power off".
- To Restart: Press and hold the Power button until the power options appear, then tap "Restart".
3. Operating Your Device
3.1. Display Features
The device features an immersive 6.9" FHD+ DotDisplay with a resolution of 2340 × 1080 pixels and a pixel density of 374 PPI. The refresh rate can be adjusted up to 144Hz for supported applications, providing a smoother visual experience. It also boasts a touch sampling rate of up to 288Hz for responsive interaction.
Figure 2: Front view of the Redmi 15 5G NFC, showcasing its large display.
Additional display features include:
- Brightness: 700 nits (typ) and 850 nits HBM for clear visibility in various lighting conditions.
- Eye-Care: TÜV Rheinland Low Blue Light (Software Solution) Certified, TÜV Rheinland Circadian Friendly Certified, and TÜV Rheinland Flicker Free Certified for comfortable viewing.
- Wet Touch Technology 2.0: Ensures accurate response to touch even when fingers are wet or covered.
3.2. Performance
The Redmi 15 5G NFC is powered by the Snapdragon® 6s Gen 3 Mobile Platform, built on a 6nm process with an octa-core Kryo CPU (up to 2.3GHz) and Adreno GPU. This configuration delivers robust performance for everyday tasks, multitasking, and gaming.
The device supports up to 16GB RAM with Memory extension (based on the 8GB RAM version), utilizing ROM storage for additional RAM capacity, ensuring smoother operation.
3.3. Security Features
- Side Fingerprint Sensor: Conveniently located for quick and secure unlocking.
- AI Face Unlock: Provides an alternative, hands-free method for unlocking your device.
4. Camera Features
The Redmi 15 5G NFC is equipped with a versatile camera system to capture your moments.
4.1. Rear Camera System
- Main Camera: 50MP with a 5P lens and f/1.8 aperture.
- Auxiliary Lens: Supports the main camera for enhanced photography.
Figure 3: Rear view of the Redmi 15 5G NFC, highlighting the 50MP AI dual camera system.
4.2. Rear Camera Video Recording
- 1080p (1920x1080) HD video recording at 30 fps.
- 720p (1280x720) HD video recording at 30 fps.
4.3. Front Camera
- 8MP front camera with f/2 aperture.
- Features: filmCamera, HDR mode, Soft-light ring, Portrait mode, Time-lapse.
4.4. Front Camera Video Recording
- 1080p (1920x1080) HD video recording at 30 fps.
- 720p (1280x720) HD video recording at 30 fps.
5. Battery Management
The Redmi 15 5G NFC is equipped with a massive 7000mAh (typical) battery, designed to provide extended usage, often lasting up to 2 days on a single charge under typical usage conditions.
5.1. Charging
The device supports 33W fast charging. For optimal charging speed and battery health, it is recommended to use the original charger and USB cable provided with the device.
6. Connectivity
The Redmi 15 5G NFC offers comprehensive connectivity options:
6.1. Network Compatibility
- USA USERS: Only Works on TMOBILE - MiNT in the USA Market (Previous SIM card activated). Outside USA 4G VoLTE Worldwide Unlocked Dual Nano SIM. FCC ID: 2AFZZRN2DL.
- 5G: SA: n1/3/5/7/8/20/28/38/40/41/66/77/78/71/2/12/26/48; NSA: n1/3/5/7/8/20/28/38/40/41/66/77/78/71.
- 4G: LTE FDD: 1*/2/3/4/5/7/8*/12/13/17/18/19/20/26/28/32/66/71; LTE TDD: 38/40/41/42/48.
- 3G: WCDMA: 1/2/4/5/8/6/19.
- 2G: GSM: 2/3/5/8.
6.2. Wireless Connectivity
- Wi-Fi: Supports standard Wi-Fi protocols.
- NFC: For contactless payments and data exchange.
- GPS: Integrated GPS, Glonass, Galileo, Beidou for accurate positioning.
- IR Blaster: Allows the device to function as a universal remote control for compatible appliances.
7. Software & Updates
The Redmi 15 5G NFC runs on Xiaomi HyperOS, based on Android 15. This operating system provides a user-friendly interface, optimized performance, and access to a wide range of applications through the Google Play Store.
Regular software updates will be provided to enhance security, introduce new features, and improve overall system stability. It is recommended to keep your device's software updated to the latest version.
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | 25057RN09E |
| Brand | XIAOMI |
| Operating System | Xiaomi HyperOS based on Android 15 |
| Screen Size | 6.9 Inches |
| Resolution | 2340 × 1080 |
| Refresh Rate | Up to 144 Hz |
| CPU Model | Snapdragon 6s Gen 3 (Octa-core Kryo, up to 2.3GHz) |
| RAM Memory Installed Size | 8 GB (Up to 16GB with Memory extension) |
| Memory Storage Capacity | 256 GB (Expandable up to 2TB) |
| Main Camera | 50MP AI Dual Camera (f/1.8) |
| Front Camera | 8MP (f/2) |
| Battery Capacity | 7000 Milliamp Hours (typ) |
| Connectivity Technologies | Wi-Fi, 5G, NFC, GPS |
| Special Features | Dual Camera, Side Fingerprint Sensor, AI Face Unlock, IR Blaster |
| Item Weight | 6 ounces |
| Color | Ripple Green |
| What's in the box | Phone Case, USB Cable |
9. Troubleshooting
If you encounter any issues with your Redmi 15 5G NFC, please refer to the following common solutions:
- Device not powering on: Ensure the battery is charged. Connect the device to its charger and wait a few minutes before attempting to power on again.
- Apps crashing or freezing: Close the problematic app and reopen it. If the issue persists, restart your device. Ensure all apps and the operating system are updated.
- Poor network signal: Check your SIM card insertion. Ensure you are in an area with network coverage. Try restarting the device or toggling airplane mode on/off.
- Battery draining quickly: Reduce screen brightness, close unused apps running in the background, and disable unnecessary features like GPS or Bluetooth when not in use.
- Touchscreen unresponsive: Restart the device. If the issue continues, perform a factory reset (back up your data first).
For more complex issues, please contact customer support.
10. Warranty & Support
Your XIAOMI Redmi 15 5G NFC is covered by a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions.
For technical support, service, or warranty claims, please visit the official XIAOMI support website or contact their customer service hotline. Keep your proof of purchase handy.
