XIAOMI Redmi 15C 4G LTE Smartphone User Manual

Introduction

This manual provides essential information and instructions for the safe and efficient use of your XIAOMI Redmi 15C 4G LTE smartphone. Please read this manual thoroughly before operating your device to ensure proper functionality and to prevent damage.

The Redmi 15C features a 6.9-inch FHD+ DotDisplay, a 50MP AI dual camera system, a 6000mAh battery with 33W turbo charging, and IP64 dust and water resistance.

Package Contents

Verify that your package contains the following items:

• XIAOMI Redmi 15C Smartphone
• 33W Wall Charger
• USB Type-C Cable
• Phone Case
• SIM Eject Tool

Device Overview

Below is an image of the XIAOMI Redmi 15C smartphone, highlighting its design and display.

Image: Front and back view of the XIAOMI Redmi 15C smartphone in Twilight Orange.

Setup

1. SIM Card and Micro SD Card Installation

1. Locate the SIM card tray on the side of your device.
2. Insert the SIM eject tool into the small hole next to the tray and press firmly until the tray pops out.
3. Place your Nano SIM cards (up to two) and a Micro SD card (if desired) into the designated slots on the tray. Ensure the gold contacts face downwards.
4. Carefully reinsert the tray into the phone.

Important Note on Network Compatibility: This device supports Dual Nano SIM. For users in the USA, it is compatible with T-Mobile, Mint, and Tello networks. It is also compatible with 4G VoLTE networks globally. Please verify your carrier's compatibility before use. The device is not compatible with Verizon, AT&T, Xfinity, Boost, Virgin, Visible, Cricket, or other CDMA carriers.

Image: Chart indicating compatible (T-Mobile, Mint, Tello, Outside USA) and incompatible (Verizon, AT&T, Xfinity, Boost, Virgin, Visible, Cricket, other CDMA) network carriers.

2. Initial Charging and Power On

• Connect the USB Type-C cable to your phone and the 33W wall charger. Plug the charger into a power outlet.
• Allow the phone to charge for at least 30 minutes before first use, or until the battery indicator shows sufficient charge.
• To power on, press and hold the Power button (usually on the right side) until the XIAOMI logo appears.

3. Initial Device Configuration

Follow the on-screen prompts to complete the initial setup, which includes:

• Selecting your language and region.
• Connecting to a Wi-Fi network.
• Signing in with your Google account.
• Setting up screen lock methods (PIN, pattern, password).
• Configuring the rear fingerprint sensor and AI face unlock for enhanced security.

Operating Instructions

1. Display and Navigation

• The 6.9-inch FHD+ DotDisplay offers a resolution of 720x1600.
• The refresh rate can be adjusted up to 120Hz for smoother visuals in supported applications. The touch sampling rate is up to 288Hz for responsive interaction.
• Adjust brightness in Settings > Display. The display features 700 nits (typ) and 850 nits HBM brightness.
• Utilize Reading mode to reduce eye strain, certified by TÜV Rheinland for Low Blue Light, Circadian Friendly, and Flicker Free.
• Navigate the device using the touchscreen interface. Swipe, tap, and pinch gestures are standard.

2. Camera Usage

Your Redmi 15C is equipped with a 50MP main camera and an 8MP front camera.

• Rear Camera: The 50MP main camera (f/1.8, 5P lens) captures high-resolution images. It supports 1080p HD video recording at 30 fps and 720p HD video recording at 30 fps.
• Front Camera: The 8MP front camera (f/2.0) is ideal for selfies and video calls. It supports 1080p HD video recording at 30 fps and 720p HD video recording at 30 fps.
• Camera Modes: Access various modes such as filmCamera, HDR mode, Soft-light ring (for front camera), Portrait mode, and Time-lapse through the camera application.

3. Connectivity

• Wi-Fi: Connect to 2.4GHz and 5GHz Wi-Fi networks via Settings > Wi-Fi.
• Bluetooth: Pair with Bluetooth 5.1 devices (e.g., headphones, speakers) via Settings > Bluetooth.
• GPS: The device supports GPS, AGPS, GLONASS, Beidou, and Galileo for accurate location services.
• Audio Jack: A 3.5mm headphone jack is available for wired audio accessories.

Maintenance

1. Battery Care

• The 6000mAh (typical) battery provides extended usage.
• Use only the provided 33W wall charger and USB Type-C cable for optimal and safe charging.
• Avoid exposing the device to extreme temperatures, as this can degrade battery life.
• For long-term storage, charge the battery to approximately 50% and power off the device.

2. Cleaning and Protection

• Clean the screen and body with a soft, lint-free cloth. Avoid abrasive materials or harsh chemicals.
• The device features IP64 dust and water resistance, offering protection against dust ingress and splashes of water. It is not designed for submersion.
• Use the included phone case for additional physical protection.

3. Software Updates

Your device runs on Xiaomi HyperOS based on Android 15. Regularly check for and install software updates via Settings > About phone > System update to ensure optimal performance, security, and access to new features.

Troubleshooting

1. Device Not Powering On

• Ensure the battery is charged. Connect the charger and wait a few minutes before attempting to power on again.
• Press and hold the Power button for at least 10-15 seconds to force a restart.

2. Network Connectivity Issues

• Verify that your SIM card is correctly inserted and activated with a compatible carrier.
• Check if Airplane Mode is disabled.
• Restart the device.
• Reset network settings via Settings > Connection & sharing > Reset Wi-Fi, mobile networks, and Bluetooth.

3. Display Not Responding

• Force restart the device (hold Power button).
• Ensure the screen is clean and free of moisture.

4. Factory Reset (Data Loss Warning)

If persistent issues occur, a factory reset may be necessary. This will erase all data on your device. Back up important data before proceeding.

• Go to Settings > About phone > Factory reset.
• Follow the on-screen instructions to confirm the reset.

Specifications

Below are the key technical specifications for the XIAOMI Redmi 15C smartphone.

For regulatory compliance and certification details, refer to the device's information screen:

Image: Screen displaying certification information for the XIAOMI Redmi 15C, including Model: 25078RA3EL, CE, FCC ID: 2AFZZRA3EL, NOM, and SUTEL markings.

Warranty and Support

Your XIAOMI Redmi 15C smartphone is covered by a manufacturer's warranty. For detailed warranty terms, conditions, and duration, please refer to the warranty card included in your product packaging or visit the official XIAOMI support website.

For technical support, service, or further inquiries, please contact XIAOMI customer service or visit their official support channels. Keep your proof of purchase for warranty claims.

Official XIAOMI Store: XIAOMI Store on Amazon