1. Introduction
This manual provides essential information for the proper use and maintenance of your OSCAL C20 Android 11 3G Smartphone. Please read this guide thoroughly before operating your device to ensure optimal performance and longevity.
Image: Front and back view of the OSCAL C20 Smartphone, showcasing its sleek design.
The OSCAL C20 is a 3G smartphone featuring a 6.088-inch HD+ display, powered by Android 11. It includes dual SIM support, a 5MP rear camera, a 2MP front camera, 1GB RAM, 32GB internal storage (expandable up to 128GB), and a 3380mAh battery. Key features include GPS, Wi-Fi, Bluetooth, and Face Unlock functionality.
2. Setup
2.1 SIM Card and Storage Card Installation
The OSCAL C20 supports dual SIM cards and an expandable storage card (up to 128GB). Ensure the device is powered off before inserting or removing cards.
- Locate the SIM card tray on the side of the device.
- Use the provided SIM ejector tool to open the tray.
- Carefully place your Nano-SIM cards and/or microSD card into the designated slots.
- Gently push the tray back into the device until it is flush.
Image: Visual representation of the OSCAL C20's key features, including the dual SIM card capability.
2.2 Initial Power On and Charging
To power on your device, press and hold the power button located on the side until the OSCAL logo appears. For initial charging, connect the provided Micro-USB cable to the phone's charging port and the power adapter to a wall outlet. It is recommended to fully charge the device before first use.
Image: Graphic illustrating the 3380mAh battery capacity of the OSCAL C20.
2.3 Basic Android 11 Setup
Upon first boot, follow the on-screen prompts to configure your device. This includes selecting your language, connecting to a Wi-Fi network, setting up your Google account, and configuring security options like Face Unlock.
3. Operating Your Device
3.1 Display and Navigation
The OSCAL C20 features a 6.088-inch HD+ Waterdrop Display with a resolution of 720x1640 and an 85% screen-to-body ratio. Navigate the interface using touch gestures: tap to select, swipe to scroll, pinch to zoom.
Image: The OSCAL C20's 6.088-inch HD+ display, highlighting its aspect ratio, resolution, and screen-to-body ratio.
3.2 Camera Functions
The device is equipped with a 5MP rear camera and a 2MP front camera. Open the Camera app to capture photos and videos. The camera supports various modes including panoramic, time-lapse, and professional settings.
Image: Close-up view of the OSCAL C20's rear camera module and front camera, emphasizing its photographic capabilities.
3.3 Connectivity
- 3G Network: Insert a compatible SIM card to access 3G mobile data.
- Wi-Fi: Go to Settings > Network & internet > Wi-Fi to connect to available networks.
- Bluetooth: Go to Settings > Connected devices > Bluetooth to pair with other Bluetooth devices.
- GPS: The device supports GPS, GLONASS, and Beidou for accurate navigation.
Image: Icons representing the OSCAL C20's connectivity options: Dual SIM, GPS, Wi-Fi, Bluetooth, and FM Radio.
3.4 Face Unlock
To set up Face Unlock, go to Settings > Security > Face Unlock and follow the instructions to register your face. This allows for convenient and secure unlocking of your device.
3.5 Android 11 Features
The OSCAL C20 runs on Android 11, offering an optimized interface and enhanced privacy features. Utilize the built-in App Freezer (Cold Room) to manage background app activity, which can help improve performance and battery life.
Image: Screenshots demonstrating the Android 11 operating system interface and the 'Cold Room' (App Freezer) feature for managing applications.
4. Maintenance
4.1 Battery Care
- Avoid exposing the device to extreme temperatures.
- Use only the original or certified charger and cable.
- Do not leave the device charging for extended periods after it is fully charged.
- If the device will not be used for a long time, charge it to about 50% before storing.
4.2 Cleaning the Device
Use a soft, lint-free cloth to clean the screen and body of the phone. Avoid using harsh chemicals or abrasive materials, which can damage the finish.
4.3 Software Updates
Regularly check for software updates to ensure your device has the latest features and security patches. Go to Settings > System > System update to check for and install updates.
4.4 Storage Management
The OSCAL C20 comes with 32GB of internal storage. To manage storage, regularly clear cache, uninstall unused apps, and move large files to an external microSD card (up to 128GB supported).
5. Troubleshooting
- Device not turning on: Ensure the battery is charged. If not, connect the charger and wait a few minutes before attempting to power on again.
- Apps crashing or freezing: Try restarting the app. If the issue persists, clear the app's cache and data in Settings > Apps > [App Name] > Storage.
- Network connectivity issues: Check if your SIM card is properly inserted. Try toggling Airplane Mode on and off. Restart the device.
- Slow performance: Close unused background apps. Clear unnecessary files and cache. Consider a factory reset as a last resort (back up your data first).
- Face Unlock not working: Ensure your face is well-lit and unobstructed. Re-register your face in the security settings if necessary.
6. Specifications
Image: Visual representation of the OSCAL C20's core performance components, including its quad-core processor, memory, and expandable storage.
| Feature | Detail |
|---|---|
| Brand | OSCAL |
| Model | C20 |
| Operating System | Android 11.0 |
| Display Size | 6.088 Inches HD+ |
| Display Resolution | 720 x 1560 |
| Processor | SC7731E 1.3 GHz Quad-core |
| RAM | 1 GB |
| Internal Storage | 32 GB |
| Expandable Storage | Up to 128 GB (MicroSD) |
| Rear Camera | 5 Megapixels |
| Front Camera | 2 Megapixels |
| Battery Capacity | 3380 mAh Lithium-Polymer |
| Connectivity | 3G, Wi-Fi 802.11 b/g/n, Bluetooth v4.2, GPS, GLONASS, Beidou, FM Radio |
| Charging Port | Micro USB |
| SIM Support | Dual SIM |
| Special Features | Face Unlock, Unibody Design |
7. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or visit the official OSCAL website. Keep your proof of purchase for warranty claims.
