1. Introduction
Thank you for choosing the Callsky T12S 12-inch Android 14 Tablet. This manual provides essential information for the safe and efficient use of your device. Please read it thoroughly before use and keep it for future reference.
Package Contents
- Callsky T12S Tablet
- USB Type-C Charging Cable
- Power Adapter
- User Manual (Japanese)

Image: Callsky T12S Tablet with its included accessories.
2. Safety Information
- Do not expose the tablet to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping or subjecting the tablet to strong impacts.
- Use only the provided charger and cable to prevent damage and ensure safety.
- Keep the tablet away from water and other liquids.
- Do not attempt to disassemble or repair the tablet yourself. Contact customer support for assistance.
3. Getting Started (Setup)
3.1 Device Layout

Image: Diagram illustrating the physical layout of the Callsky T12S tablet, including ports and buttons.
- Power Button: Located on the top edge (when held horizontally). Press and hold to power on/off or restart.
- Volume Buttons: Located next to the power button. Use to adjust volume.
- Front Camera: Located on the top bezel.
- Rear Camera: Located on the back panel.
- USB Type-C Port: Located on the side for charging and data transfer.
- MicroSD Card Slot: Located on the side, for expandable storage.
- Speakers: Four high-quality speakers for immersive audio.
- 3.5mm Headphone Jack: For connecting wired headphones.
3.2 Charging the Tablet
- Connect the USB Type-C cable to the tablet's Type-C port.
- Connect the other end of the cable to the power adapter.
- Plug the power adapter into a wall outlet.
- The battery indicator on the screen will show charging status.
A full charge provides approximately 6-10 hours of average use, thanks to the 8000mAh battery.

Image: The tablet connected to a charger via its Type-C port, indicating charging in progress.
3.3 Power On/Off
- To Power On: Press and hold the Power button until the Callsky logo appears.
- To Power Off: Press and hold the Power button until the power options appear on the screen, then select "Power off".
- To Restart: Press and hold the Power button, then select "Restart".
3.4 Initial Setup
Upon first power-on, follow the on-screen prompts to configure your tablet:
- Select your preferred language.
- Connect to a Wi-Fi network.
- Sign in with your Google account or create a new one. This is required to access Google Play Store and other Google services.
- Set up screen lock (PIN, pattern, password, or face unlock).
- Review and accept terms and conditions.
3.5 SIM Card and MicroSD Card Installation
The tablet supports 4G LTE connectivity and MicroSD card expansion up to 2TB (NTFS format, sold separately).
- Locate the SIM/MicroSD card tray on the side of the tablet.
- Use the provided SIM ejector tool to open the tray.
- Carefully place your Nano-SIM card(s) and/or MicroSD card into the tray, ensuring correct orientation.
- Gently push the tray back into the tablet until it clicks into place.
4. Operating Your Tablet
4.1 Android 14 Features
Your tablet runs on Android 14, offering enhanced personalization, privacy protection, and accessibility features.

Image: Visual representation of Android 14's key features including personalization, security, multitasking, and parental controls.
- Personalization: Customize your device's interface, widgets, and themes.
- Privacy & Security: Comprehensive privacy controls and enhanced security features.
- Multitasking: Efficiently manage multiple applications simultaneously.
- Parental Control: Manage app usage and screen time for children.
4.2 Display and Visuals
The Callsky T12S features a 12-inch 2K (2000x1200) IPS display with a 16:10 aspect ratio, providing vibrant colors and clear images. It supports Widevine L1 for high-definition streaming on platforms like Netflix and YouTube.

Image: The tablet displaying a YouTube video, highlighting its suitability for media consumption.
- Brightness Adjustment: Swipe down from the top of the screen to access the Quick Settings panel and adjust the brightness slider.
- Screen Resolution: The tablet's native resolution is 2000x1200 pixels.
- Widevine L1: Ensures secure playback of high-definition content from streaming services.
4.3 Connectivity
- Wi-Fi: Supports dual-band Wi-Fi (2.4G/5G) for stable internet connection. Go to Settings > Network & internet > Wi-Fi to connect.
- Bluetooth 5.0: For connecting wireless accessories like keyboards, mice, and headphones. Go to Settings > Connected devices > Bluetooth.
- 4G LTE: Insert a SIM card to enable mobile data and make calls (if supported by your carrier).
- GPS: Integrated GPS for navigation and location services.
4.4 Camera Usage
The tablet is equipped with a 13MP rear camera and a 5MP front camera.
- Open the Camera app from the home screen or app drawer.
- Tap the camera switch icon to toggle between front and rear cameras.
- Tap the shutter button to take photos or start/stop video recording.
4.5 Storage Management
The tablet comes with 256GB of internal storage and 16GB RAM (8GB + 8GB virtual RAM). Storage can be expanded up to 2TB using a MicroSD card.
- To check storage: Go to Settings > Storage.
- To manage files: Use the pre-installed Files app or download a file manager from the Google Play Store.
4.6 Face Recognition
Set up face recognition for quick and secure unlocking of your tablet.
- Go to Settings > Security & privacy > Device unlock > Face unlock.
- Follow the on-screen instructions to register your face.
5. Maintenance
5.1 Cleaning Your Tablet
- Use a soft, lint-free cloth to clean the screen and body of the tablet.
- Do not use harsh chemicals, abrasive cleaners, or aerosol sprays.
- If necessary, slightly dampen the cloth with water or a screen cleaner designed for electronics.
5.2 Battery Care
- Avoid fully discharging the battery frequently.
- Do not leave the tablet charging for extended periods after it's fully charged.
- Store the tablet in a cool, dry place if not used for a long time, with the battery charged to about 50%.
5.3 Software Updates
Regularly check for and install software updates to ensure optimal performance and security.
- Go to Settings > System > System update.
- Follow the on-screen instructions to check for and install any available updates.
6. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Tablet does not turn on | Ensure the battery is charged. Connect to the charger for at least 30 minutes, then try powering on again. |
| Screen is unresponsive | Perform a force restart by holding the Power button for 10-15 seconds. |
| Wi-Fi connection issues | Restart your Wi-Fi router and the tablet. Check Wi-Fi settings on the tablet. |
| Apps are crashing or freezing | Clear the cache of the problematic app (Settings > Apps > [App Name] > Storage & cache > Clear cache). If the issue persists, uninstall and reinstall the app. |
| Slow performance | Close unused apps, clear cache, or consider a factory reset if the issue is severe (back up data first). |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Callsky |
| Model Name | T12S |
| Operating System | Android 14 |
| Screen Size | 12 inches |
| Display Type | IPS |
| Display Resolution | 2000 x 1200 pixels (2K) |
| Aspect Ratio | 16:10 |
| Processor | UNISOC T616 Octa-core CPU (up to 2.0GHz) |
| Graphics Hardware | Mali-G57 |
| RAM | 16GB (8GB physical + 8GB virtual) |
| Internal Storage | 256GB |
| Expandable Storage | Up to 2TB via MicroSD (NTFS format) |
| Rear Camera | 13 MP |
| Front Camera | 5 MP |
| Video Resolution | FHD 1080p |
| Battery Capacity | 8000mAh (6000 mAh rating in some specs) |
| Average Battery Life | 6-10 Hours |
| Charging Port | USB Type-C |
| Wireless Connectivity | Wi-Fi (802.11ac/b/g/n), Bluetooth 5.0, 4G LTE |
| Other Features | GPS, Face Recognition, Stereo Speakers, USB OTG, Stylus Support |
| Dimensions (LxWxH) | 27.9 x 17.4 x 0.8 cm |
| Weight | Approximately 500 grams |
8. Warranty and Support
8.1 Product Warranty
The Callsky T12S tablet comes with a 2-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use.


Images: Icons representing quality assurance and technical certification.
Please retain your proof of purchase for warranty claims. If you encounter any issues with the product, please contact customer support as soon as possible.
8.2 Customer Support
For any inquiries or support needs, please contact Callsky customer service. We aim to respond within 24 hours on weekdays and 48-72 hours on holidays.

Image: Callsky brand logo.
How to Contact Us via Amazon:
- Go to your Amazon account > Order History > Select the relevant order.
- Click on the seller's name (Callsky-JP) below the "Add to Cart" button on the product page.
- You can contact us by email from "Ask a question" on the top right.
Support Hours: Monday - Friday, 10:00 AM - 7:00 PM (excluding weekends and manufacturer-specified holidays).





