1. Introduction
This manual provides essential information for the safe and efficient operation of your DOOGEE Fire 3 Max Rugged Smartphone. Please read this manual thoroughly before using your device to ensure proper functionality and to maximize its features. The DOOGEE Fire 3 Max is designed for durability and performance in challenging environments, featuring a robust build, long-lasting battery, and advanced camera capabilities.

Figure 1: Front and back view of the DOOGEE Fire 3 Max Rugged Smartphone.
2. What's in the Box
Verify that all items are present in your product package:
- 1 x DOOGEE Fire 3 Max Cellphone
- 1 x Type-C USB Cable
- 1 x Charger
- 1 x User Manual
- 1 x Warranty Card
3. Device Overview
The DOOGEE Fire 3 Max features a compact yet rugged design, engineered for durability and ease of use. It incorporates a 5.5-inch HD+ display and a distinctive rear panel with integrated features.

Figure 2: The DOOGEE Fire 3 Max is available in multiple color accents, showcasing its robust build.
4. Setup
4.1. SIM and SD Card Installation
- Locate the SIM card tray on the side of the device.
- Use the provided SIM ejector tool to open the tray.
- Place your Nano-SIM card(s) and/or microSD card into the designated slots.
- Carefully reinsert the tray into the device, ensuring it is flush with the phone's body.
4.2. Initial Power On
- Press and hold the Power button (located on the side) until the DOOGEE logo appears.
- Follow the on-screen prompts to complete the initial setup, including language selection, Wi-Fi connection, and Google account setup.
5. Operating Your Device
5.1. Android 15 System
The DOOGEE Fire 3 Max operates on Android 15, offering enhanced privacy, security, and multitasking capabilities. This system provides a convenient, secure, and user-friendly experience.

Figure 3: Overview of Android 15 features on the DOOGEE Fire 3 Max.
5.2. Secondary Display (MiniScreen)
The rear of the device features a customizable secondary display, also known as MiniScreen. This display can show various information such as time, date, battery status, and notifications. You can customize its appearance and functionality through the device settings.

Figure 4: The secondary display on the rear of the DOOGEE Fire 3 Max.
5.3. Side Key Function
The device features a customizable side key that can be programmed for various functions, such as launching specific applications, activating the flashlight, or taking screenshots. This provides quick access to frequently used features.
5.4. Camera Features
Capture moments with clarity using the 48MP main camera. The 20MP Night Vision camera enhances visibility in low-light conditions, allowing for clear images even in darkness. An 8MP front camera is available for selfies and video calls.

Figure 5: Camera setup of the DOOGEE Fire 3 Max.
5.5. Dual Camping Lights
The device is equipped with two powerful 1200LM camping lights on the rear. These lights offer three modes: constant lighting, flash, and SOS, with adjustable brightness and operating time, making them useful for outdoor activities.

Figure 6: The dual camping lights provide versatile illumination for various situations.
5.6. Battery and Charging
The DOOGEE Fire 3 Max is equipped with a large 8350mAh battery, providing extended usage time. It supports 18W fast charging and features OTG reverse charging, allowing it to act as a power bank for other devices.

Figure 7: Battery and charging features of the DOOGEE Fire 3 Max.
5.7. Performance
The device is powered by a UNISOC T7250 octa-core processor, ensuring smooth performance for daily tasks and multitasking. It comes with 32GB of RAM (8GB physical + up to 24GB extended virtual RAM) and 256GB of internal storage, expandable up to 2TB via TF card.

Figure 8: The UNISOC T7250 chipset provides seamless power for device operations.

Figure 9: Memory and storage configuration of the DOOGEE Fire 3 Max.
5.8. Durability
The DOOGEE Fire 3 Max is built to withstand harsh conditions, certified with IP68, IP69K, and MIL-STD-810H ratings. This ensures resistance to dust, water immersion (up to 1.5 meters for 0.5-1 hour), and extreme temperatures, making it suitable for outdoor professionals and adventurers.

Figure 10: The DOOGEE Fire 3 Max is IP68, IP69K, and MIL-STD-810H certified for extreme durability.
5.9. Connectivity and Security
The device supports dual SIM functionality and a wide range of network bands. It includes NFC for Google Pay and access cards, and supports multiple GPS navigation systems (Beidou, Galileo, Glonass, GPS) for accurate positioning. Security features include a side-mounted fingerprint sensor and face unlock.

Figure 11: Connectivity and security features of the DOOGEE Fire 3 Max.
6. Specifications
| Feature | Detail |
|---|---|
| Model Name | Fire 3 Max |
| Operating System | Android 15 |
| CPU Model | UNISOC T7250 Octa-core |
| CPU Speed | 1.8 GHz |
| RAM Memory Installed Size | 32 GB (8GB physical + 24GB extended) |
| Memory Storage Capacity | 256 GB (expandable to 2TB) |
| Screen Size | 5.5 Inches |
| Resolution | 1280 x 720 |
| Refresh Rate | 60Hz |
| Main Camera | 48MP |
| Night Vision Camera | 20MP |
| Front Camera | 8MP |
| Battery Capacity | 8350 Milliamp Hours |
| Fast Charging | 18W |
| Durability Ratings | IP68 / IP69K / MIL-STD-810H |
| Special Features | Dual Camping Lights, NFC, GPS, Side Fingerprint, Face Unlock |
| Dimensions | 9.66 x 6.43 x 0.39 inches |
| Item Weight | 1.05 pounds (478 Grams) |
7. Troubleshooting
7.1. Device Lagging or Freezing
If your device experiences lagging or freezing, consider the following steps:
- Close Background Apps: Too many apps running simultaneously can consume system resources. Swipe up from the bottom of the screen and close unnecessary applications.
- Uninstall Unused Apps: Regularly review and uninstall applications that are no longer needed to free up storage and RAM.
- Restart Your Device: A simple restart can often resolve temporary software glitches. Press and hold the Power button, then select 'Restart'.
8. Warranty and Support
Your DOOGEE Fire 3 Max comes with a 1-year warranty service. For any inquiries or assistance, DOOGEE offers 7x24 hours customer service.

Figure 12: DOOGEE's commitment to service and support.





