1. Introduction
Welcome to the user manual for your new XIAOMI Redmi 15C smartphone. This guide provides essential information on setting up, operating, maintaining, and troubleshooting your device. Please read this manual thoroughly to ensure optimal performance and longevity of your smartphone.
2. Safety Information
To prevent injury, damage to your device, or damage to other property, read all safety information before using the device.
- Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
- Use only approved chargers and accessories.
- Avoid dropping or subjecting the device to severe impact.
- Keep the device away from medical devices to avoid interference.
- Do not attempt to disassemble or repair the device yourself.
3. Device Overview
Familiarize yourself with the physical components of your Redmi 15C smartphone.

Image 3.1: Front and back view of the Redmi 15C smartphone. The front features a large display with a small notch for the front camera. The back shows a dual-camera module and the Redmi branding.

Image 3.2: Right side of the Redmi 15C, featuring the power button (which integrates the fingerprint sensor) and volume rocker.

Image 3.3: Left side of the Redmi 15C, showing the SIM card tray slot.

Image 3.4: Top view of the Redmi 15C, which may include a secondary microphone or IR blaster depending on the model.
3.1. What's in the Box
The standard package for your Redmi 15C includes:
- XIAOMI Redmi 15C Smartphone
- USB Type-C Cable
- 67W Charger
- Smartwatch
- Wireless Earbuds

Image 3.5: The complete package contents for the Redmi 15C, showing the smartphone, USB cable, 67W charger, smartwatch, and wireless earbuds.
4. Setup
4.1. Inserting SIM Card and SD Card
- Locate the SIM card tray on the left side of your device (refer to Image 3.3).
- Insert the SIM ejector tool into the small hole next to the tray to open it.
- Place your Nano-SIM card(s) and/or microSD card into the tray with the gold contacts facing down.
- Carefully push the tray back into the slot until it clicks into place.
4.2. Charging the Device
Before first use, fully charge your Redmi 15C.
- Connect the USB Type-C cable to the charging port at the bottom of your phone.
- Connect the other end of the cable to the 67W power adapter.
- Plug the power adapter into a wall outlet.
- The charging indicator will appear on the screen.
4.3. Powering On and Initial Setup
- Press and hold the Power button (located on the right side) until the XIAOMI logo appears.
- Follow the on-screen instructions to select your language, connect to Wi-Fi, set up your Google account, and configure security features like the fingerprint sensor.
5. Operating Your Device
5.1. Basic Navigation
- Tap: Touch an icon or option to select it.
- Swipe: Drag your finger across the screen to scroll or navigate between screens.
- Pinch: Use two fingers to zoom in or out on photos and web pages.
- Side Fingerprint Sensor: Press the power button to unlock your device or authenticate payments.
5.2. Camera Operation
Your Redmi 15C features a 50MP main camera.
- Open the Camera app from your home screen or app drawer.
- Select your desired mode (Photo, Portrait, Video, etc.).
- Tap the shutter button to capture a photo or start/stop recording a video.
- Use pinch gestures to zoom in or out.
5.3. Connectivity
- Wi-Fi: Go to Settings > Wi-Fi to connect to available networks.
- Mobile Data (4G): Ensure your SIM card is inserted and mobile data is enabled in Settings > Network & internet > Mobile network.
- Bluetooth: Pair with wireless accessories like the included earbuds via Settings > Connected devices > Bluetooth.
5.4. Using Included Accessories
Your Redmi 15C package includes a smartwatch and wireless earbuds. Refer to their respective manuals for detailed instructions on pairing and usage. Generally, they connect via Bluetooth.
6. Maintenance
6.1. Cleaning Your Device
- Use a soft, lint-free cloth to wipe the screen and body.
- Avoid using harsh chemicals or abrasive materials.
- Do not spray cleaners directly onto the device.
6.2. Software Updates
Your device runs on Android 15. Keep your software updated to ensure optimal performance and security.
- Go to Settings > About phone > System update to check for and install available updates.
- Ensure your device has sufficient battery and a stable internet connection before updating.
6.3. Battery Care
The Redmi 15C is equipped with a 5000mAh battery.
- Avoid fully discharging the battery frequently.
- Do not leave the device charging for extended periods after it's full.
- Keep the device within recommended operating temperatures.
7. Troubleshooting
If you encounter issues with your device, try the following solutions:
- Device not turning on: Ensure the battery is charged. Connect the charger and try again. If unresponsive, press and hold the Power button for 10-15 seconds to force a restart.
- Apps crashing or freezing: Close the app and reopen it. If the issue persists, restart your phone. Check for app updates in the Google Play Store.
- Poor network signal: Check if your SIM card is properly inserted. Move to an area with better network coverage. Restart your device.
- Battery draining quickly: Reduce screen brightness, disable unused features like Bluetooth or GPS, and close background apps. Check battery usage in Settings to identify power-hungry apps.
- Fingerprint sensor not working: Ensure your finger is clean and dry. Re-register your fingerprint in Settings > Security & privacy > Device unlock.
8. Specifications
| Feature | Detail |
|---|---|
| Brand | XIAOMI |
| Model | Redmi 15C |
| Operating System | Android 15 |
| Processor | MediaTek Helio G81-Ultra |
| Internal Storage | 256 GB |
| RAM | 4 GB |
| Display | 6.9" AMOLED, 120Hz |
| Main Camera | 50MP |
| Battery Capacity | 5000mAh |
| Charging | 67W Fast Charging (charger included) |
| Connectivity | 4G, Wi-Fi, Bluetooth, USB Type-C |
| Security | Side Fingerprint Sensor |
| Included Components | USB Cable, 67W Charger, Smartwatch, Wireless Earbuds |
9. Warranty and Support
For warranty information and customer support, please refer to the official XIAOMI website or contact their authorized service centers.
- Official Website: Visit www.mi.com for product support, FAQs, and service center locations.
- Customer Service: Contact XIAOMI customer service for technical assistance or warranty claims.
Please retain your proof of purchase for warranty purposes.





