Introduction
The DOOGEE Blade 20 is a robust and intelligent rugged smartphone designed for demanding environments and efficient daily use. It features the latest Android 15 OS with integrated Gemini AI for enhanced interactions, a massive 10300mAh battery for extended endurance, and a vibrant 6.6-inch HD+ 90Hz display. Built to withstand drops, water, and dust with IP68/IP69K and MIL-STD-810H certifications, it combines durability with high performance, including an octa-core processor, ample RAM, and expandable storage. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device.

Figure 1: DOOGEE Blade 20 Rugged Smartphone, showcasing its robust design and display.
Initial Setup
Package Contents
- DOOGEE Blade 20 Smartphone
- USB Type-C Cable
- Power Adapter (18W)
- SIM Ejector Tool
- User Manual (this document)
- Screen Protector (pre-applied or in box)
Inserting SIM/TF Card
The DOOGEE Blade 20 supports dual SIM cards and one TF (microSD) card simultaneously. Locate the SIM 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 TF card into the designated slots, ensuring correct orientation. Gently push the tray back into the phone until it clicks into place.

Figure 2: Inserting SIM and TF cards into the DOOGEE Blade 20.
Powering On/Off
- To Power On: Press and hold the Power button (located 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 displayed on the screen.
- Restart: Press and hold the Power button, then select 'Restart' from the options.
Initial Configuration
Upon first power-on, the device will guide you through the initial setup process. This includes selecting your language, connecting to a Wi-Fi network, setting up your Google account, and configuring security features like fingerprint or face ID. Follow the on-screen prompts to complete the setup.
Operating the Device
Display and Navigation
The DOOGEE Blade 20 features a 6.6-inch HD+ display with a 90Hz refresh rate, providing smooth visuals for browsing, videos, and gaming. Navigate the interface using touch gestures: tap to select, swipe to scroll, pinch to zoom. The 90Hz refresh rate enhances the fluidity of on-screen motion.

Figure 3: Key features of the 6.6-inch 90Hz display.
Camera Functions
The device is equipped with a 16MP main camera and an 8MP front camera. It supports AI-powered scene recognition, which automatically optimizes settings for various shooting scenarios (e.g., landscape, food, portrait). Google Smart Camera technology is integrated, allowing for object search, text extraction, and translation directly from the camera interface.
Battery Management
The Blade 20 is powered by a large 10300mAh battery, offering extended usage times. It supports 18W fast charging for quick recharges and reverse charging, allowing you to use your phone as a power bank for other devices. To optimize battery life, manage background app usage and adjust screen brightness.

Figure 4: Details on the 10300mAh battery and 18W fast charging.
Performance and Storage
The smartphone is powered by the T7200 octa-core high-performance chip. It comes with 20GB RAM (4GB physical + 16GB virtual) and 128GB of internal storage (ROM). Storage can be expanded up to 2TB using a TF (microSD) card, providing ample space for applications, photos, videos, and files.

Figure 5: Overview of the Unisoc T7200 processor and memory configuration.
Gemini AI Integration
The DOOGEE Blade 20 integrates Gemini AI technology, enhancing user interaction through text, image, and voice. This allows for quick task completion, such as scene recognition, summary generation, and efficient problem-solving, improving productivity in various aspects of life and work.

Figure 6: Benefits of the integrated Gemini AI for daily tasks.
Connectivity
The device supports Dual SIM 4G connectivity, ensuring broad network compatibility. It also includes NFC for contactless payments and data transfer, Bluetooth for wireless accessories, Wi-Fi for internet access, and a comprehensive GPS system (Beidou, Galileo, Glonass, GPS) for accurate navigation.
Maintenance and Durability
Rugged Features
The DOOGEE Blade 20 is built to be highly durable, featuring IP68/IP69K dustproof and waterproof ratings, and MIL-STD-810H certification. This means it can withstand 1.5m drops, immersion in up to 1.5m of water for 30 minutes, and is fully protected against dust ingress. These features make it suitable for harsh outdoor environments and industrial use.

Figure 7: Demonstrating the MIL-STD-810H military-grade protection of the Blade 20.
Cleaning and Storage
To clean your device, use a soft, lint-free cloth. For stubborn dirt, a slightly damp cloth can be used, ensuring all ports are sealed. Avoid using harsh chemicals or abrasive materials. Store the device in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
Troubleshooting
This section addresses common issues you might encounter with your DOOGEE Blade 20.
| Problem | Possible Cause | Solution |
|---|---|---|
| Phone not turning on | Low battery; software crash | Charge the phone for at least 30 minutes. Press and hold the Power button for 10-15 seconds to force restart. |
| Poor battery life | Too many background apps; high screen brightness; weak signal | Close unused apps. Reduce screen brightness. Enable battery saver mode. Check for strong network signal. |
| Network issues (no signal/slow data) | Incorrect SIM insertion; out of network coverage; APN settings | Reinsert SIM card. Move to an area with better coverage. Check APN settings with your carrier. Enable/disable Airplane mode. |
| Apps crashing/freezing | Insufficient RAM; app bug; outdated software | Clear app cache/data. Update the app or phone software. Restart the device. |
| Fingerprint/Face ID not working | Dirty sensor/camera; improper registration; software glitch | Clean the sensor/camera. Re-register your fingerprint/face ID. Restart the phone. |
Specifications
Detailed technical specifications for the DOOGEE Blade 20.
| Feature | Specification |
|---|---|
| Model Name | DOOGEE Blade 20 |
| Operating System | Android 15 |
| Processor | Unisoc T7200 Octa-core, 1.6 GHz |
| RAM | 20GB (4GB Basic + 16GB Virtual) |
| Internal Storage (ROM) | 128GB |
| Expandable Storage | Up to 2TB via TF card (sold separately) |
| Display Size | 6.6 Inches |
| Display Resolution | HD+ |
| Refresh Rate | 90 Hz |
| Main Camera | 16MP |
| Front Camera | 8MP |
| Battery Capacity | 10300mAh |
| Charging | 18W Fast Charging, Reverse Charging |
| Dimensions | 6.85 x 3.2 x 0.62 inches (15.8mm thin) |
| Weight | 11.5 ounces (327 Grams) |
| Durability | IP68/IP69K Waterproof/Dustproof, MIL-STD-810H Certified |
| Connectivity | Dual SIM 4G, Wi-Fi, Bluetooth, NFC |
| Navigation | GPS, GLONASS, Galileo, Beidou |
| Security Features | Fingerprint ID, Face ID |
| Audio Jack | Type-C |
| Color | Brown |
Warranty and Support
Warranty Information
Your DOOGEE Blade 20 smartphone is covered by a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging for specific terms, conditions, and duration. Keep your proof of purchase for warranty claims.
Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact DOOGEE customer support through their official website or the retailer from whom you purchased the device. You can also visit the DOOGEE Store on Amazon for additional resources and contact information.





