UMIDIGI G3 Tab Ultra
UMIDIGI G3 Tab Ultra 10-inch Android Tablet User Manual
Model: G3 Tab Ultra | Brand: UMIDIGI
1. Introduction
Thank you for choosing the UMIDIGI G3 Tab Ultra. This user manual provides essential information to help you set up, operate, and maintain your new tablet. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your user experience.

The UMIDIGI G3 Tab Ultra, highlighting its key features: 4G LTE connectivity, a 10.1-inch display, the powerful Helio G99 processor, and ample memory with 16GB RAM and 128GB internal storage.
2. Package Contents
Please check the box for the following items:
- UMIDIGI G3 Tab Ultra Tablet
- Protective Silicone Case
- USB Type-C Cable
- 18W Power Adapter
- SIM Ejector Tool
- Quick Start Guide
3. Setup
3.1 Charging the Device
Before first use, fully charge the tablet. Connect the USB Type-C cable to the tablet's charging port and the 18W power adapter to a wall outlet. The tablet features a 6000mAh battery and supports 18W fast charging.
3.2 Inserting SIM and MicroSD Cards
The UMIDIGI G3 Tab Ultra supports dual SIM cards or one SIM card and one MicroSD card for storage expansion up to 1TB.
- Locate the SIM card tray on the side of the tablet.
- Insert the SIM ejector tool into the small hole next to the tray to open it.
- Carefully place your Nano-SIM card(s) and/or MicroSD card into the designated slots on the tray. Ensure the gold contacts face downwards.
- Gently push the tray back into the tablet until it clicks into place.

The tablet supports flexible connectivity with a dual SIM slot, allowing for either two SIM cards (SIM1 and SIM2) or one SIM card (SIM1) and one MicroSD card for expanded storage.
3.3 Initial Power On and Setup
Press and hold the Power button until the UMIDIGI logo appears. Follow the on-screen instructions to complete the initial setup, including language selection, Wi-Fi connection, and Google account sign-in.
4. Operating the Tablet
4.1 Performance
The UMIDIGI G3 Tab Ultra is powered by the MediaTek Helio G99 octa-core processor, built on a 6nm process, ensuring smooth performance for gaming, streaming, and multitasking. It comes with 8GB of physical RAM, expandable up to 16GB through virtual RAM technology, and 128GB of internal storage, which can be expanded further with a MicroSD card.

Detailed view of the tablet's core performance components, including the Helio G99 Octa-core Processor, 128GB of internal storage (ROM), and 16GB of RAM (8GB physical + 8GB extended virtual RAM), built on a 6nm process for efficiency. AnTuTu benchmark scores are also displayed, indicating its performance capabilities.
4.2 Connectivity
Stay connected with the tablet's versatile connectivity options:
- 4G Dual SIM: Supports TDD LTE and FDD LTE 4G networks, allowing for two active SIM cards.
- Wi-Fi: Supports 2.4G/5G Wi-Fi for stable internet access.
- Bluetooth 5.2: For connecting wireless accessories like headphones, speakers, and game controllers.
- GPS: Integrated GPS, GLONASS, BeiDou, and Galileo navigation modes for accurate location services.

This collage illustrates the versatile capabilities of the UMIDIGI G3 Tab Ultra, including seamless wireless projection to external displays, 4G Dual SIM support for continuous connectivity and video calls, integrated GPS for reliable navigation, and the convenient split-screen mode for efficient multitasking.
4.3 Display and Multimedia
The tablet features a 10.1-inch HD display with a resolution of 1280x800 pixels, providing clear visuals for your content.
- Wireless Projection: Easily cast your tablet's screen to a compatible PC or TV for a larger viewing experience.
- Split-screen Mode: Enhance productivity by running two applications side-by-side.
- 3.5mm Headphone Jack: Connect wired headphones for private listening and FM radio functionality.

The UMIDIGI G3 Tab Ultra supports wireless projection, allowing you to easily cast your screen to a PC or TV. This feature is ideal for gaming, presentations, or enjoying multimedia content on a larger display.
4.4 Camera and Security
The tablet is equipped with 8MP front and 8MP rear cameras for capturing photos and videos. For quick and secure unlocking, the tablet supports AI Face Unlock.

Capture clear photos and videos with the tablet's 8MP front and 8MP rear cameras. The UMIDIGI G3 Tab Ultra also features AI Face Unlock for quick and secure access to your device.
4.5 Android 13 Operating System
The UMIDIGI G3 Tab Ultra runs on the latest Android 13 operating system, which offers enhanced privacy controls, improved system performance, and more personalized user experience features.

Experience the latest Android 13 operating system on the UMIDIGI G3 Tab Ultra, designed for quicker app launches, smoother scrolling, and improved overall performance. Android 13 offers enhanced features for personal privacy, simplified operation, increased efficiency, and greater personalization options.
5. Maintenance
5.1 Cleaning the Tablet
Use a soft, lint-free cloth to clean the tablet's screen and body. Avoid using abrasive cleaners or solvents that may damage the surface.
5.2 Software Updates
Periodically check for system updates to ensure your tablet has the latest features and security patches. You can usually find this option in the tablet's Settings menu under 'System' or 'About tablet'.
6. Troubleshooting
If you encounter issues with your UMIDIGI G3 Tab Ultra, try the following common solutions:
- Device not turning on: Ensure the tablet is sufficiently charged. Connect it to the charger for at least 30 minutes before attempting to power it on again.
- Screen unresponsive: Try restarting the tablet by holding the Power button for about 10-15 seconds until it powers off and then restart it.
- Wi-Fi/Bluetooth connectivity issues: Toggle Wi-Fi/Bluetooth off and on in the settings. If the issue persists, restart your router or the tablet.
- Apps crashing or freezing: Close the problematic app and reopen it. If the issue continues, clear the app's cache or reinstall it.
- Slow performance: Close unnecessary background apps. Consider clearing cache data or performing a factory reset (back up your data first).
For more complex issues, refer to the official UMIDIGI support resources.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | UMIDIGI |
| Model Name | G3 TAB Ultra |
| Operating System | Android 13 |
| Processor | MediaTek Helio G99 Octa-core (2.2 GHz) |
| Display Size | 10.1 Inches |
| Display Resolution | 1280 x 800 Pixels |
| RAM | 16GB (8GB physical + 8GB extended) |
| Internal Storage | 128GB (Expandable up to 1TB with TF card) |
| Cameras | 8MP Front, 8MP Rear |
| Battery Capacity | 6000mAh |
| Charging | 18W Fast Charging (Type-C) |
| Connectivity | 4G LTE (Dual SIM), Wi-Fi (802.11a/b/g/n/ac), Bluetooth 5.2 |
| Navigation | GPS, GLONASS, BeiDou, Galileo |
| Dimensions (L x W x H) | 24.89 x 16 x 1.02 cm |
| Weight | 595 Grams |
| Special Features | Large screen, 18W fast charge, 4G LTE & Dual SIM support, 8MP camera + Face Unlock |
8. Warranty and Support
UMIDIGI provides a one-year after-sales support for the G3 Tab Ultra. For any technical assistance, warranty claims, or further inquiries, please contact UMIDIGI customer service through their official website or the retailer where you purchased the product.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.