1. Introduction
The DOOGEE V31 GT is a robust 5G rugged smartphone designed for demanding environments and outdoor activities. It features a powerful Dimensity 1080 Octa Core processor, a large 10800mAh battery with 66W fast charging, and an advanced photography system including a 50MP main camera, 24MP night vision camera, and a flagship-grade 5G thermal imaging system. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device.
Figure 1: DOOGEE V31 GT 5G Rugged Phone Overview
2. Package Contents
Please check the contents of your product box. If any items are missing or damaged, contact your retailer.
- 1 x DOOGEE V31 GT Cellphone
- 1 x Type-C USB Cable
- 1 x Charger (66W)
- 1 x Anti-explosion film (pre-applied)
- 1 x Gift protective film
- 1 x Packing Box
- 1 x User Manual
- 1 x Warranty Card
Figure 2: Package Contents
3. Specifications
| Feature | Specification |
|---|---|
| Brand Name | DOOGEE |
| Model | V31GT |
| Operating System | Android 13 |
| Processor | Dimensity 1080 Octa Core (2.6GHz, 6nm) |
| RAM | 12GB + Up to 8GB Extended (20GB Total) |
| ROM | 256GB + T-Flash Card up to 2TB |
| Display Size | 6.58 inches |
| Display Resolution | 2408x1080 FHD+ |
| Screen Type | IPS Waterdrop Screen, Corning Gorilla Glass 5 |
| Screen Refresh Rate | 120 Hz |
| Rear Camera | 50MP SONY IMX766 Main Camera, 24MP Night Vision Camera, 8MP Fusion Camera |
| Front Camera | 32MP Samsung Front Camera |
| Thermal Imaging | Flagship-Grade 5G Thermal Imaging System (1440x1080 resolution, 1000m range) |
| Battery Capacity | 10800mAh (Not Detachable) |
| Charging Power | 66W Fast Charging (Type-C interface) |
| Cellular | 5G (NR: N1/N3/N7/N28/N38/N41/N77/N78/N79), FDD, TDD, WCDMA, CDMA, GSM |
| Wi-Fi | Wi-Fi 6 (ax/ac/a/b/g/n) |
| Bluetooth | BT5.2 |
| NFC | Yes |
| OTG | Yes (Reverse Charging) |
| Navigation | GPS, Glonass, Galileo, Beidou, AGPS (Dual-Channel Positioning) |
| Durability | IP68, IP69K, MIL-STD-810H (Waterproof, Dust-proof, Drop-proof) |
| Biometrics | Side-Mounted Fingerprint, Face Recognition |
| Other Features | Dual Stereo Speaker, Personalized Custom Button, Digital Toolkit |
Figure 3: Display Specifications
4. Initial Setup
4.1 SIM Card & MicroSD Card Installation
The DOOGEE V31 GT supports dual Nano SIM cards or one Nano SIM card and one MicroSD (TF) card for storage expansion up to 2TB.
- 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 card(s) and/or MicroSD card into the designated slots. Ensure correct orientation.
- Gently push the tray back into the device until it is flush.
Figure 4: SIM Card Installation
4.2 Charging the Device
Before first use, fully charge your DOOGEE V31 GT. Use the provided 66W fast charger and Type-C USB cable for optimal charging speed.
- Connect the Type-C USB cable to the charging port at the bottom of the phone.
- Connect the other end of the USB cable to the 66W power adapter.
- Plug the power adapter into a wall outlet.
- The charging indicator will appear on the screen.
Figure 5: 66W Fast Charging
4.3 Power On/Off
- To Power On: Press and hold the Power button (usually on the right side) until the DOOGEE logo appears.
- To Power Off: Press and hold the Power button, then select 'Power off' from the options on the screen.
4.4 Network Compatibility
Before purchasing or using, please confirm your SIM bands compatibility. You can check network compatibility for your region at: https://www.frequencycheck.com
Supported Network Bands:
- NR (5G): N1/N3/N7/N28/N38/N41/N77/N78/N79
- FDD: B1/2/3/4/5/7/8/12/17/18/19/20/25/26/28A/28B/66
- TDD: B34/38/39/40/41
- WCDMA: B1/2/4/5/6/8/19
- CDMA: BC0/BC1/BC10
- GSM: B2/3/5/8
- Support EDGE/GPRS
5. Operating Instructions
5.1 Display and Navigation
The device features a 6.58-inch FHD+ IPS Waterdrop Screen with a 120Hz refresh rate for smooth visuals. Navigate using touch gestures and the Android 13 interface.
Figure 6: 120Hz Refresh Rate
5.2 Camera System
The DOOGEE V31 GT is equipped with a versatile camera system for various scenarios:
- 50MP SONY IMX766 Main Camera: For high-resolution photos with Super Night Mode and PDAF.
- 24MP Night Vision Camera: Designed for clear imaging in low-light or complete darkness.
- Flagship-Grade 5G Thermal Imaging System: Detects heat sources with 1440x1080 resolution and a 1000m measuring range. Useful for identifying issues like leaks, blockages, or electrical shorts.
- 32MP Front Camera: For high-quality selfies and video calls.
Figure 7: Rear Camera System
Figure 8: Thermal Imaging System in Use
5.3 Performance and Storage
The Dimensity 1080 Octa Core processor combined with 20GB RAM (12GB physical + 8GB extended) ensures smooth multitasking and gaming. The 256GB internal storage can be expanded up to 2TB with a MicroSD card.
Figure 9: Dimensity 1080 Processor
Figure 10: Storage Expansion
5.4 Battery Features
The 10800mAh battery provides extended usage. Utilize 66W fast charging for quick power-ups. The device also supports OTG reverse charging, allowing you to charge other devices.
Figure 11: OTG Reverse Charging
5.5 Connectivity
- Wi-Fi 6: Enjoy faster and more stable wireless internet connectivity.
- Bluetooth 5.2: Connect to wireless headphones, speakers, and other Bluetooth accessories.
- NFC: For contactless payments and quick data sharing.
- Dual-Channel Positioning: Enhanced accuracy with GPS, Glonass, Galileo, Beidou, and AGPS.
Figure 12: Wi-Fi 6 Connectivity
Figure 13: NFC Functionality
5.6 Security Features
- Side Fingerprint Recognition: Unlock your phone quickly and securely using the side-mounted fingerprint sensor.
- Face Unlock: Use facial recognition for convenient and secure access.
Figure 14: Side Fingerprint Recognition
Figure 15: Face Unlock
5.7 Smart Features
- Smart Gesture Control: Interact with your device using intuitive gestures for unlocking or waking up the screen.
- Personalized Custom Button: Assign a custom function to the side button for quick access to apps or features with a single click, double click, or long press.
- Digital Toolkit: Access a suite of useful tools including Compass, Soundmeter, Pic Hanging, Gradienter, HeightMeasure, Magnifier, Protractor, Plumb Bob, Alarm Bell, Flashlight, and Pedometer.
Figure 16: Smart Gesture Control
Figure 17: Personalized Custom Button
Figure 18: Digital Toolkit
6. Maintenance
6.1 General Care and Handling
- Cleaning: Use a soft, lint-free cloth to clean the screen and body. Avoid abrasive cleaners or solvents.
- Water and Dust Resistance: While the device is IP68/IP69K rated, ensure all port covers are securely closed before exposing it to water or dust. Avoid prolonged submersion or high-pressure water jets.
- Temperature: Operate the device within recommended temperature ranges. Extreme heat or cold can affect battery life and performance.
- Impact: Despite its rugged design (MIL-STD-810H certified), avoid unnecessary drops or impacts to prolong the device's lifespan.
6.2 Battery Care
- Use only the original DOOGEE charger and cable.
- Avoid completely draining the battery frequently.
- Do not expose the battery to extreme temperatures.
7. Troubleshooting
7.1 Common Issues and Solutions
- Device not turning on: Ensure the battery is charged. Press and hold the power button for at least 10-15 seconds.
- Charging issues: Check if the charger and cable are properly connected. Try a different outlet. Ensure the charging port is clean and free of debris.
- Network connectivity problems: Check SIM card installation. Ensure mobile data is enabled. Try restarting the device. Verify network compatibility for your region.
- Apps crashing or freezing: Close background apps. Clear app cache. Restart the device.
- Fingerprint/Face unlock not working: Ensure your fingers/face are clean and dry. Re-register your fingerprint/face in settings if issues persist.
- Thermal imaging not working: Ensure the thermal imaging app is updated. Check for any physical obstructions on the thermal camera lens.
8. User Tips
- Customize Your Experience: Utilize the personalized custom button to quickly access your most-used apps or functions.
- Explore the Digital Toolkit: The built-in digital toolkit offers a variety of useful tools for outdoor enthusiasts and professionals, from a compass to a pedometer.
- Optimize Storage: With 256GB internal storage and up to 2TB expansion, manage your files efficiently to keep your device running smoothly.
9. Warranty and Support
Your DOOGEE V31 GT device comes with a standard manufacturer's warranty. Please refer to the included Warranty Card for detailed terms and conditions, including warranty period and coverage. For technical support, service, or further inquiries, please contact your local DOOGEE service center or the retailer where you purchased the device.