Introduction
This user manual provides essential information for operating your realme 12 Pro smartphone. Please read this manual thoroughly to ensure proper usage and to maximize the device's capabilities. Keep this manual for future reference.
Product Overview
The realme 12 Pro is a feature-rich smartphone designed for communication, entertainment, and productivity. It includes advanced camera systems, robust connectivity options, and a powerful processor.

Image: realme 12 Pro smartphone, Submarine Blue variant, displaying its front screen and rear camera module.
Key Features:
- Advanced Primary and Front Cameras
- Fast Charging Support
- Integrated Fingerprint Scanner
- Multiple Connectivity Options: Wi-Fi, Bluetooth, USB, NFC
Setup
1. Inserting SIM Card and SD Card (if applicable)
- Locate the SIM card tray on the side of your device.
- Use the provided SIM ejector tool to open the tray.
- Place your Nano-SIM card(s) and/or microSD card into the tray according to the diagram.
- Carefully reinsert the tray into the device.
2. Initial Power On and Setup
- Press and hold the Power button until the realme logo appears.
- Follow the on-screen instructions to select your language, connect to Wi-Fi, and set up your Google account.
- Configure security settings, including fingerprint unlock.
3. Charging the Device
Connect the USB cable to the charging port on your phone and the other end to a power adapter. Plug the adapter into a power outlet. The device supports fast charging.
Operating Your Device
Power On/Off and Restart
- Power On: Press and hold the Power button until the device vibrates and the realme logo appears.
- Power Off: Press and hold the Power button, then select "Power off" from the options.
- Restart: Press and hold the Power button, then select "Restart" from the options.
Basic Navigation
- Touch: Tap an icon to open an app or select an item.
- Swipe: Move 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.
Fingerprint Scanner
The device features a fingerprint scanner for secure unlocking and authentication. Ensure your finger is clean and dry when using the scanner.
Camera Usage
Access the Camera app from your home screen or app drawer. You can switch between the primary camera and the front camera for different photography needs. Explore various modes and settings within the app for optimal results.
Connectivity
- Wi-Fi: Go to Settings > Wi-Fi to connect to available wireless networks.
- Bluetooth: Go to Settings > Bluetooth to pair with Bluetooth devices like headphones or speakers.
- NFC: Enable NFC in Settings for contactless payments and data transfer.
- USB: Connect your device to a computer using a USB cable for file transfer or charging.
Maintenance
Cleaning Your Device
Use a soft, lint-free cloth to clean the screen and body of your phone. Avoid using harsh chemicals or abrasive materials. Do not expose the device to excessive moisture.
Battery Care
- Avoid extreme temperatures, as they can affect battery life.
- Use only realme-approved chargers and cables.
- For optimal battery longevity, avoid frequently discharging the battery completely or keeping it at 100% charge for extended periods.
Software Updates
Regularly check for and install software updates to ensure your device has the latest features, security patches, and performance improvements. Go to Settings > About phone > Software update.
Data Backup
It is recommended to regularly back up your important data (photos, contacts, documents) to a cloud service or a computer to prevent data loss.
Troubleshooting
Common Issues and Solutions
- Device not turning on: Ensure the battery is charged. Connect to a charger for at least 10 minutes, then try powering on.
- Apps crashing or freezing: Close the app and reopen it. If the issue persists, clear the app's cache (Settings > Apps > [App Name] > Storage > Clear cache).
- Connectivity problems (Wi-Fi/Bluetooth): Toggle Wi-Fi or Bluetooth off and on. Restart your device. Ensure you are within range of the network or device.
- Slow performance: Close unnecessary background apps. Clear cache and temporary files. Consider performing a factory reset as a last resort (back up data first).
Factory Reset
Warning: A factory reset will erase all data from your device. Back up all important data before proceeding.
To perform a factory reset, go to Settings > System > Reset options > Erase all data (factory reset). Follow the on-screen prompts.
Specifications
| Feature | Detail |
|---|---|
| Brand | realme |
| Model Number | RMX3840 |
| Operating System | realme UI 5.0 |
| RAM | 8 GB |
| Internal Storage | 128 GB |
| CPU Model | Snapdragon |
| CPU Speed | 2.2 GHz |
| Battery Capacity | 5000 Milliamp Hours |
| Product Dimensions | 16.15 x 7.4 x 0.87 cm |
| Item Weight | 196 g |
| Colour | Submarine Blue |
| Wireless Technologies | Bluetooth, Cellular, NFC, Wi-Fi |
| Connectivity Technologies | Bluetooth, USB, Wi-Fi |
| Special Features | Bluetooth, Camera, Fast Charging Support, Fingerprint Scanner, Front Camera, Primary Camera, USB, Wifi |
| Manufacturer | Oppo Mobiles India Private Limited |
| Date First Available | 30 January 2024 |
Warranty and Support
Your realme 12 Pro device comes with a standard manufacturer's warranty. For detailed warranty terms and conditions, please refer to the warranty card included in your product packaging or visit the official realme support website.
For technical assistance, troubleshooting, or service inquiries, please contact realme customer support. You can find contact information on the official realme website or through the support section in your device settings.
Online Support: Visit the official realme website for FAQs, software downloads, and service center locations. realme Support





