1. Introduction
Welcome to the realme C75 4G Smartphone user manual. 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.

Figure 1: Front view of the realme C75 4G Smartphone, showcasing its full display.
2. Package Contents
Upon unboxing your realme C75 4G Smartphone, verify that all the following items are included:
- realme C75 4G Smartphone
- USB Cable
- Phone Case
- SIM Card Tray Ejector Pin
- Protective Film (pre-applied or in box)
- Quick Start Guide (this document)
- Warranty Card
3. Setup
3.1 Inserting SIM Card and MicroSD Card
Locate the SIM card tray on the side of your device. Use the provided ejector pin to open the tray. Insert your Nano-SIM card(s) and/or a MicroSD card into the designated slots. Ensure the cards are correctly oriented before reinserting the tray firmly into the phone.

Figure 2: Side view of the realme C75, indicating the location of the SIM card tray and buttons.
3.2 Initial Power On and Configuration
Press and hold the power button until the realme logo appears. Follow the on-screen instructions to select your language, connect to a Wi-Fi network, and set up your Google account. You will also be guided through setting up security features like fingerprint recognition.
4. Operating Your Device
4.1 Basic Navigation
The realme C75 features a responsive touchscreen for all interactions. Swipe, tap, and pinch gestures are used for navigation, opening apps, and zooming. The power button and volume buttons are located on the side for easy access.
4.2 Biometric Identification
The device supports fingerprint recognition for secure unlocking and authentication. Register your fingerprints in the Security settings for quick and convenient access.
5. Camera Features
The realme C75 is equipped with a 50MP rear camera, designed to capture clear and detailed images. It also includes advanced algorithms for shadow removal, enhancing document capture.

Figure 3: Sample images demonstrating the clarity of the 50MP camera.
5.1 Text Scanner
Utilize the integrated text scanner feature to capture documents with enhanced clarity. The 50MP camera and advanced shadow removal algorithms ensure that text is legible and detailed.

Figure 4: The text scanner function, designed for clear document capture.
5.2 Video Recording
The realme C75 supports video recording at 1080p resolution with frame rates of 30, 60, and 120 frames per second (fps).
6. Battery Management
The realme C75 is equipped with a 5828 mAh battery, providing extended usage times. The device supports 45W fast charging, allowing for quick power replenishment.

Figure 5: Visual representation of the 5828 mAh battery capacity.
6.1 Fast Charging
With 45W fast charging, the realme C75 can reach 100% charge in approximately 90 minutes. A 5-minute charge can provide up to 3 hours of call time.

Figure 6: The 45W fast charging capability of the realme C75.
6.2 Battery Longevity
The battery is designed for long-term durability, maintaining over 80% of its capacity after 1460 charge cycles, equivalent to approximately four years of typical use.

Figure 7: Illustration of the realme C75's long-lasting battery technology.
7. Durability Features
The realme C75 is built with enhanced durability features, including IP69 water and dust resistance, and ArmorShell protection.

Figure 8: The realme C75 demonstrating its IP69 water resistance.
7.1 IP69 Water and Dust Resistance
The device boasts IP69 water and dust resistance, offering protection against splashes, dust ingress, and even immersion. It has been tested to withstand immersion in water up to 2 meters for 24 hours.
7.2 ArmorShell Protection
The realme C75 incorporates ArmorShell Protection, providing 360-degree ultra shock resistance. This includes an integrated metal inner frame and internal airbag design for comprehensive protection against drops and impacts.

Figure 9: Internal view highlighting the ArmorShell Protection features.
7.3 ArmorShell Glass
The display is protected by ArmorShell Glass, which enhances resistance to drops by 260% and scratch resistance by 400%. This glass is fortified with lithium, aluminum, and boron for superior toughness.

Figure 10: Cross-section view of the ArmorShell Glass technology.
8. Display Features
Experience stunning and seamless visuals on the realme C75's 6.72-inch Full HD display with a 90Hz refresh rate.

Figure 11: The 6.72-inch Full HD 90Hz display in action.
8.1 Display Specifications
- Size: 6.72 inches
- Resolution: 2400 x 1080 pixels (Full HD)
- Refresh Rate: 90 Hz
- Panel Type: LCD
- Aspect Ratio: 16:9
- Pixel Density: 313 PPI
9. Performance
The realme C75 is powered by a MediaTek Helio G92 Max processor, ensuring smooth performance for daily tasks and gaming.

Figure 12: The MediaTek Helio G92 Max processor and its performance metrics.
9.1 Processor and Memory
- CPU: MediaTek Helio G92 Max (Octa-Core, up to 4.32 GHz)
- RAM: 8 GB (expandable up to 24 GB dynamic RAM)
- Internal Storage: 128 GB (expandable up to 256 GB via MicroSD)

Figure 13: Dynamic RAM expansion feature of the realme C75.
10. Software
The realme C75 runs on realme UI 5.0, based on Android 14, offering a user-friendly and feature-rich experience.

Figure 14: Overview of realme UI 5.0 features.
10.1 Mini Capsule 3.0
The Mini Capsule 3.0 provides an intuitive way to view notifications and interact with certain apps without interrupting your current activity.

Figure 15: The Mini Capsule 3.0 interface.
11. Maintenance
To ensure the longevity and optimal performance of your realme C75, follow these maintenance guidelines:
- Cleaning: Use a soft, lint-free cloth to clean the screen and body. Avoid abrasive materials or harsh chemicals.
- Software Updates: Regularly check for and install system updates to benefit from the latest features, security patches, and performance improvements.
- Storage Management: Periodically clear unnecessary files and apps to free up storage space and maintain device speed.
- Battery Care: Avoid extreme temperatures and prolonged exposure to direct sunlight. Do not let the battery completely drain frequently.
12. Troubleshooting
If you encounter issues with your realme C75, refer to the following common troubleshooting steps:
- Device Unresponsive: If the device is frozen or unresponsive, press and hold the power button for about 10-15 seconds to force a restart.
- Battery Draining Quickly: Check background app usage, reduce screen brightness, disable unnecessary features like GPS or Bluetooth when not in use. Consider a factory reset if the issue persists after a software update.
- Network Connectivity Issues: Toggle Airplane Mode on and off. Restart the device. Check if your SIM card is properly inserted. Contact your service provider if the issue continues.
- App Crashes: Clear the cache and data of the problematic app in Settings > Apps. If the issue persists, uninstall and reinstall the app.
- Overheating: Avoid using the phone while charging or during intensive tasks for extended periods. Close background apps. If overheating is frequent, contact support.
13. Specifications
Detailed technical specifications for the realme C75 4G Smartphone:
| Feature | Specification |
|---|---|
| Brand | realme |
| Model Name | realme C75 |
| Operating System | Android (realme UI 5.0 based on Android 14) |
| CPU Model | MediaTek Helio G92 Max |
| CPU Speed | Up to 4.32 GHz |
| RAM | 8 GB (up to 24 GB Dynamic RAM) |
| Storage Capacity | 128 GB (expandable up to 256 GB) |
| Screen Size | 6.72 Inches |
| Screen Resolution | 2400 x 1080 (FHD) |
| Refresh Rate | 90 Hz |
| Battery Capacity | 5828 mAh (Lithium-Ion) |
| Charging | 45W Fast Charging |
| Rear Camera | 50 MP |
| Video Resolution | 1080p (30, 60, 120 fps) |
| Water Resistance Level | IP69 (Waterproof) |
| Biometric Features | Fingerprint Recognition |
| Connectivity | 4G LTE, USB-C, 3.5mm Jack |
| SIM Card Type | Nano SIM (Single Slot) |
| Weight | 185 Grams |
14. Warranty and Support
14.1 Warranty Information
The realme C75 4G Smartphone comes with a 2-year manufacturer's warranty. Please retain your proof of purchase for warranty claims. The warranty covers manufacturing defects but does not cover damage caused by misuse, accidents, or unauthorized repairs.
14.2 Customer Support
For further assistance, technical support, or service inquiries, please visit the official realme support website or contact their customer service hotline. Refer to the warranty card or realme's official website for specific contact details in your region.