1. Introduction
The 8849 Tank 3 is a rugged smartphone designed for durability and extended use in challenging environments. It features a large battery, advanced camera system, and specialized tools, all within a robust, protective casing.

Figure 1: Front and rear view of the 8849 Tank 3 Rugged Smartphone.
2. Getting Started
2.1 Package Contents
Verify that your package contains the following items:
- 1x 8849 Tank 3 Phone
- 1x Type-C Cable
- 1x USB-C Power Adapter (120W)
- 1x User Manual/Warranty Card
- 1x Screen Protector
2.2 SIM Card Installation
To install your SIM card(s) and/or microSD card:
- 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 card(s) and/or microSD card into the designated slots.
- Gently push the tray back into the device until it clicks into place. Ensure the tray is fully sealed to maintain water and dust resistance.
Video 1: Unboxing and SIM card installation for a similar rugged phone model.
2.3 Powering On/Off
To power on the device, press and hold the Power button (located on the side) until the screen illuminates. To power off, press and hold the Power button, then select 'Power off' from the options.
3. Key Features & Operation
3.1 Battery and Charging
The Tank 3 is equipped with a 23800mAh battery, offering extended usage times. It supports 120W fast charging, allowing the device to reach 90% charge in approximately 1.5 hours. The phone can also function as a power bank via OTG cable to charge other devices.

Figure 2: Illustration of the 23800mAh battery capacity and 120W fast charging capability.
Video 2: Overview of the 8849 Tank 3's features, including battery and charging.
3.2 Performance and Storage
Powered by an MTK Dimensity 8200 Octa-Core processor (4nm process/3.1GHz), the Tank 3 offers a smooth operating experience. It features 32GB RAM (16GB physical + 16GB adjustable virtual RAM) and 512GB ROM, expandable up to 2TB with a microSD card.

Figure 3: Details on the 32GB RAM and 512GB ROM with expandable storage.
3.3 Display
The device features a 6.79-inch FHD+ display with a 1080*2460 resolution and a 120Hz adaptive refresh rate for a smooth visual experience.

Figure 4: Visual representation of the 6.79-inch FHD+ display with 120Hz refresh rate.
3.4 Camera System
The Tank 3 boasts a versatile camera setup:
- Main Camera: 200MP for high-detail photography.
- Front Camera: 50MP for clear selfies.
- Night Vision Camera: 64MP for capturing images in low-light conditions.
- Wide-angle Camera: 50MP for broader scenic views.
- Telephoto Camera: 8MP for artistic depth and zoom.
It also supports an underwater camera mode for capturing photos and videos while submerged.

Figure 5: Overview of the multi-camera system on the 8849 Tank 3.
3.5 Specialized Tools
- 1200LM Camping Light: A powerful light source with 5 modes (SOS, explosion flash, slightly bright, full light, half light) for outdoor activities. It also includes warning signal lights for emergencies.
- 40m Range Finder: An integrated tool for fast and precise measurement of length, area, and volume.

Figure 6: The 1200LM camping light providing illumination in an outdoor setting.
Video 3: Demonstration of the 8849 Tank 3's projector, ruggedness, and lighting features.
3.6 Durability
The 8849 Tank 3 is designed for 360° full protection, making it waterproof, shockproof, and dust-proof. It can withstand various harsh environments, including submersion in water up to 1.5m deep for 30 minutes and drops from a height of 1.5m.

Figure 7: Visuals illustrating the waterproof, dustproof, and drop-proof capabilities of the Tank 3.
3.7 Connectivity
The device supports Dual 5G connectivity. It is compatible with T-Mobile and Verizon carriers. For other carriers, users should verify frequency band compatibility: GSM:B2/3/5/8; WCDMA: Band1/2/4/5/6/8/19; C2K: BC0,BC1; LTE FDD:B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28A/28B/66; LTE TDD: 34/38/39/40/41/42; 5G NR:N1/2/3/5/7/8/12/20/25/28/38/40/41/66/77/78. The phone also includes NFC for contactless payments and data transfer.
4. Maintenance and Care
To ensure the longevity and optimal performance of your 8849 Tank 3 Rugged Smartphone, follow these maintenance guidelines:
- Always ensure all port covers (USB-C, headphone jack, SIM tray) are securely closed when not in use to maintain water and dust resistance.
- Clean the device regularly with a soft, damp cloth. Avoid harsh chemicals or abrasive materials.
- If the device has been exposed to saltwater, rinse it thoroughly with fresh water and dry completely before charging or opening any ports.
- Avoid exposing the device to extreme temperatures for prolonged periods.
5. Troubleshooting
5.1 Network Connectivity Issues
If you experience issues with network connectivity:
- Ensure your SIM card is correctly inserted and the tray is fully closed.
- Verify that your carrier is T-Mobile or Verizon. For other carriers, check the frequency bands listed in Section 3.7 to confirm compatibility.
- Restart your device.
- Check your network settings to ensure mobile data is enabled and APN settings are correct for your carrier.
5.2 Battery Not Charging
If the battery is not charging:
- Ensure the USB-C cable and power adapter are securely connected to the device and a working power outlet.
- Check the USB-C port for any debris or damage.
- Try using a different USB-C cable and power adapter.
6. Specifications
| Feature | Specification |
|---|---|
| Model Name | TANK3 |
| Operating System | Android 13.0 |
| CPU Model | Mediatek Dimensity 8200 (Octa-Core, 3.1GHz) |
| RAM | 16 GB (expandable to 32GB with virtual RAM) |
| Internal Storage (ROM) | 512 GB (expandable up to 2 TB via microSD) |
| Display Size | 6.79 Inches FHD+ |
| Resolution | 1080 x 2460 |
| Refresh Rate | 120 Hz |
| Battery Capacity | 23800 Milliamp Hours |
| Fast Charging | 120W |
| Main Camera | 200 MP |
| Front Camera | 50 MP |
| Night Vision Camera | 64 MP |
| Waterproof Rating | IP68 (1.5m for 30 minutes) |
| Drop-Proof | Up to 1.5m |
| Dimensions | 7.04 x 3.38 x 1.22 inches |
| Item Weight | 1.47 pounds (666 Grams) |
7. Warranty and Support
Your 8849 Tank 3 smartphone is manufactured by Shenzhen OBlue Communication Technology Company Limited. For detailed warranty information and support, please refer to the included User Manual/Warranty Card in your product package.
For further assistance, you may contact the manufacturer or visit their official support channels as indicated in the warranty documentation.





