1. Setup
This section guides you through the initial setup of your Ulefone RugKing 3 Pro.
1.1 Unboxing Your Device
Upon opening the package, you will find the Ulefone RugKing 3 Pro smartphone along with essential accessories. Please check the contents against the list below.
- Ulefone RugKing 3 Pro Smartphone
- AC Power Charger (100~240V)
- USB-A to Type-C Data Cable (100cm)
- Screen Protector (pre-applied or in box)
- SIM Tray Ejector
- Lanyard
- User Manual (this document)
Video: Ulefone Rugking 3 Pro Unboxing Video. This video demonstrates the unboxing process and shows all included items.
1.2 SIM Card Installation
To install your SIM card(s) and/or microSD card:
- Locate the SIM tray on the side of the device.
- Insert the SIM tray ejector tool into the small hole next to the tray and press firmly until the tray pops out.
- Carefully pull out the SIM tray.
- Place your Nano-SIM card(s) and/or microSD card into the designated slots on the tray. Ensure the gold contacts are facing down and the cards are correctly oriented.
- Gently push the tray back into the device until it is flush with the side.

Image: Close-up of the Ulefone RugKing 3 Pro showing the SIM card tray location and how to insert the SIM card and microSD card.
1.3 Initial Power On
Press and hold the Power button (located on the right side of the device) until the Ulefone logo appears on the screen. Follow the on-screen prompts to complete the initial setup, including language selection, Wi-Fi connection, and Google account setup.
2. Operating Your Device
This section details the key features and functionalities of your Ulefone RugKing 3 Pro.
2.1 Android 15 Operating System
Your device runs on Android 15, offering enhanced security features, improved privacy controls, and optimized performance. Key features include:
- Advanced Theft Detection: Helps keep your device and data safe.
- Private Space: Secure sensitive data and applications.
- App Pairing: Multitask efficiently by using two apps simultaneously on the screen.
- Enhanced Large-Screen Optimization: Improved user experience for the 6.56-inch display.

Image: Visual representation of Android 15 features, including privacy settings and app pairing, on the Ulefone RugKing 3 Pro screen.
2.2 Display
The Ulefone RugKing 3 Pro features a 6.56-inch display with a 120Hz refresh rate and 500 nits brightness, providing a smooth and vibrant visual experience. It is protected by Corning Gorilla Glass for enhanced scratch resistance.

Image: The Ulefone RugKing 3 Pro display showcasing its 120Hz refresh rate and Corning Gorilla Glass protection.
2.3 Camera Functions
Capture high-quality photos and videos with the versatile camera system:
- 48MP Main Camera: For detailed outdoor photography with an f/1.8 aperture.
- 2MP Macro Camera: Ideal for capturing intricate details of small objects.
- 8MP Front Camera: Perfect for selfies and video calls.

Image: Overview of the Ulefone RugKing 3 Pro's camera system, highlighting the 48MP main camera, 2MP macro camera, and 8MP front camera.
Video: Ulefone Rugking 3 Pro Hands-On. This video demonstrates various features including the macro camera in use.
2.4 AI Assistant (Gemini)
The device integrates an AI assistant, Gemini, along with Ulefone AI Pro features for intelligent and productive tasks:
- AI Recording Summary: One-tap note-taking and speech-to-text transcription.
- AI Writing Assist: Smart formatting, style rewriting, translation, and proofreading.
- Ulefone Screen Search: Circle an item on your screen to search for it.
- AI Calculator: Handwriting math solver.

Image: Illustration of Ulefone AI Pro features, including AI assistant capabilities like screen search and writing assist.
2.5 Water-Lock Mode
Activate Water-Lock mode to disable touchscreen functionality, allowing safe use of your phone in wet conditions without accidental touches. This ensures screen visibility even in rain.

Image: The Ulefone RugKing 3 Pro being used in rain with Water-Lock Mode activated, preventing accidental touches.
2.6 Super Torch
The device features a powerful 120 lumens flashlight, activated with a one-key function. This "Super Torch" is designed to illuminate your path in dark environments.

Image: The Ulefone RugKing 3 Pro's 120 lumens Super Torch illuminating a dark path.
2.7 Additional Features
- NFC-Enabled: For contactless payments and data transfer.
- Custom Key: A programmable button for quick access to frequently used functions (single click, double click, long press).
- Outdoor Toolbox: A suite of tools for outdoor activities.
- 3-Card Slot: Supports two SIM cards and one microSD card simultaneously.
- GPS + GLONASS + Beidou + Galileo: Comprehensive satellite navigation for accurate positioning.
- Face Unlock: Secure and convenient device unlocking.
- Headset-Free FM Radio: Enjoy radio without needing wired headphones as an antenna.

Image: Visuals of various additional features including NFC, custom key, outdoor toolbox, and navigation systems.
3. Maintenance
Proper care and maintenance will ensure the longevity and optimal performance of your Ulefone RugKing 3 Pro.
3.1 Durability and Protection
The RugKing 3 Pro is built to withstand harsh environments, certified with IP68/IP69K ratings for water and dust resistance, and MIL-STD-810H for shock resistance. This means it can endure submersion, dust exposure, and drops from up to 2 meters.

Image: Demonstrates the ruggedness of the Ulefone RugKing 3 Pro, highlighting its IP68/IP69K and MIL-STD-810H certifications for water, dust, and shock resistance.
3.2 Battery Management
The device is equipped with a 5600mAh battery, providing extended usage times. To maximize battery life:
- Avoid extreme temperatures.
- Use the provided charger and cable.
- Optimize screen brightness and background app usage.
The phone supports dock charging for convenient and rapid recharging. The dock charger is sold separately.

Image: The Ulefone RugKing 3 Pro highlighting its 5600mAh battery capacity and support for dock charging.
4. Troubleshooting
If you encounter any issues with your Ulefone RugKing 3 Pro, please refer to the following common solutions:
- Device not powering on: Ensure the battery is charged. Connect the device to the charger and wait a few minutes before attempting to power it on again.
- Screen unresponsive: Perform a forced restart by holding the Power button for approximately 10-15 seconds.
- Network connectivity issues: Check if your SIM card is properly inserted. Verify your network settings and ensure mobile data is enabled. Try restarting the device.
- Apps crashing or freezing: Clear the cache of the problematic app or reinstall it. Ensure your device's software is up to date.
- Water-Lock Mode issues: Ensure the mode is properly activated or deactivated as needed. If the screen remains unresponsive after exiting the mode, restart the device.
For more complex issues, please contact Ulefone customer support.
5. Specifications
Below are the detailed technical specifications for the Ulefone RugKing 3 Pro:
| Feature | Detail |
|---|---|
| Brand | Ulefone |
| Model Name | RugKing 3 Pro |
| Operating System | Android 15 |
| RAM Memory Installed Size | 16 GB |
| Memory Storage Capacity | 128 GB (Expandable up to 2TB with microSD) |
| Screen Size | 6.56 Inches |
| Resolution | 1080p (Display Resolution Maximum: 720 x 1612 Pixels) |
| Refresh Rate | 120 Hz |
| Wireless Carrier | Unlocked |
| Cellular Technology | 4G |
| Color | Black |
| SIM Card Slot Count | Dual SIM |
| Connector Type | USB Type C |
| Form Factor | Touch Screen |
| Water Resistance Level | Waterproof (IP68/IP69K) |
| Additional Features | Built-In Flashlight, Dual SIM, Rugged Body, Waterproof |
| Front Photo Sensor Resolution | 8 MP |
| Rear Facing Camera Photo Sensor Resolution | 48 MP (Main), 2 MP (Macro) |
| Number of Rear Facing Cameras | 3 |
| Number of Front Cameras | 1 |
| Battery Capacity | 5600 Milliamp Hours |
| Battery Average Life (Talk Time) | 28 Hours |
| Item Dimensions | 6.84 x 3.26 x 0.51 inches |
| Supported Satellite Navigation System | BeiDou, GLONASS, GPS, Galileo |
6. Warranty & Support
Your Ulefone RugKing 3 Pro comes with a manufacturer's warranty and dedicated support.
- Warranty: The device includes a 12-month manufacturer warranty service in the US.
- Customer Support: For any questions or assistance regarding your product, please contact Ulefone customer service. Refer to the official Ulefone website or the included warranty card for contact details.





