Introduction
Welcome to the user manual for your new DOOGEE N40 Pro Android 11 Smartphone. This guide provides essential information on setting up, operating, maintaining, and troubleshooting your device. Please read this manual thoroughly to ensure optimal performance and longevity of your smartphone.
Package Contents
Please check the box for the following items:
- 1 x DOOGEE N40 Pro Smartphone
- 1 x USB Type-C Cable
- 1 x Charger (12V/2A)
- 1 x Screen Protector Film
- 1 x TPU Protective Case
- 1 x User Manual
Product Overview
The DOOGEE N40 Pro is a powerful and versatile Android 11 smartphone designed for everyday use. It combines robust performance with a long-lasting battery and advanced camera features.

Figure 1: DOOGEE N40 Pro Smartphone. This image shows the front display and the rear camera module and textured back panel of the device.
Key Features:
- Long-lasting Battery: Equipped with a 6380mAh battery, providing extended usage times for gaming, streaming, and calls. Supports 24W fast charging and OTG reverse charging.
- Advanced Camera System: Features a 20MP AI quad-camera setup (20MP main, 8MP wide-angle, 8MP macro, 2MP portrait) and a 16MP Samsung front camera for clear and detailed photos.
- Ample Storage and RAM: Comes with 6GB of RAM for smooth multitasking and 128GB of UFS 2.1 internal storage, expandable up to 256GB with a T-flash card.
- Immersive Display: Features a 6.52-inch HD+ waterdrop display with a 720*1600 resolution and a 20:9 aspect ratio for an enhanced visual experience.
- Efficient Performance: Powered by an Helio P60 Octa-Core 2.0GHz processor, ensuring smooth and reliable performance for various applications.
- Secure Access: Integrated fingerprint sensor for quick and secure unlocking.
- Dual SIM Support: Allows for two SIM cards for flexible network usage.

Figure 2: Illustration of the 6380mAh battery capacity, highlighting its long endurance for various activities like gaming, standby, calls, and music playback, along with 24W fast charging and OTG reverse charging capabilities.

Figure 3: Detailed view of the DOOGEE N40 Pro's AI Quad Camera system, showing the 20MP main, 8MP wide-angle, 8MP macro, and 2MP portrait lenses.

Figure 4: Graphic illustrating the 6GB RAM and 128GB ROM storage capacity of the DOOGEE N40 Pro, emphasizing ample space for applications and data.

Figure 5: Image showcasing the 6.52-inch HD+ waterdrop display of the DOOGEE N40 Pro, highlighting its resolution and aspect ratio for clear visuals.

Figure 6: Visual representation of the Helio P60 Octa-Core processor, emphasizing its role in delivering fast, fluid, and reliable performance for the smartphone.
Setup
1. Inserting SIM and TF Cards
- Locate the SIM card tray on the side of your device.
- Use the provided SIM ejector tool to open the tray.
- Carefully place your Nano-SIM card(s) and/or TF (microSD) card into the designated slots on the tray. Ensure the gold contacts are facing down.
- Gently push the tray back into the slot until it is flush with the phone's body.
2. Charging the Battery
- Connect the USB Type-C cable to the charging port at the bottom of your phone.
- Connect the other end of the cable to the provided charger adapter.
- Plug the charger into a power outlet.
- Allow the phone to charge fully before initial use. The battery indicator on the screen will show charging status.
3. Powering On/Off
- To Power On: Press and hold the Power button (integrated with the fingerprint sensor) until the DOOGEE logo appears.
- To Power Off: Press and hold the Power button, then select "Power off" from the options that appear on the screen.
4. Initial Setup
Upon first power-on, the device will guide you through the initial setup process. This includes selecting your language, connecting to Wi-Fi, setting up your Google account, and configuring security features like the fingerprint sensor.
Operating Instructions
Basic Navigation
- Touchscreen Gestures: Use tap, swipe, pinch-to-zoom, and long-press gestures to interact with the interface.
- Home Screen: Swipe left or right to navigate between home screens. Swipe down from the top for notifications and quick settings.
- Navigation Bar: Use the on-screen buttons (Back, Home, Recent Apps) or gesture navigation (if enabled) to move between applications and screens.
Camera Usage
- Open the "Camera" application from your home screen or app drawer.
- Select your desired camera mode (Photo, Video, Portrait, Macro, Wide-angle) by swiping across the mode selector.
- Tap on the screen to focus on a specific object.
- Press the shutter button to capture a photo or start/stop video recording.
- Use the front/rear camera switch icon to toggle between the 20MP quad-camera and the 16MP front camera.
Fingerprint Sensor
The fingerprint sensor is integrated into the power button. To set up your fingerprint:
- Go to Settings > Security > Fingerprint.
- Follow the on-screen instructions to register your fingerprint. You may need to set up a backup screen lock method (PIN, pattern, or password).
- Once registered, you can use your fingerprint to unlock your phone and authorize purchases or app access.
Connectivity
- Wi-Fi: Access Wi-Fi settings from the Quick Settings panel or Settings > Network & Internet > Wi-Fi to connect to available networks.
- Bluetooth: Enable Bluetooth from Quick Settings or Settings > Connected devices > Bluetooth to pair with other devices like headphones or speakers.
- GPS: Location services are enabled by default. Manage GPS settings in Settings > Location.
- Mobile Data: Ensure your SIM card is active and mobile data is enabled in Settings > Network & Internet > Mobile network for internet access via your carrier.
Maintenance
Cleaning Your Device
- Use a soft, lint-free cloth to gently wipe the screen and body of the phone.
- Avoid using harsh chemicals, abrasive cleaners, or aerosol sprays.
- Do not expose the phone to excessive moisture.
Software Updates
Regularly check for software updates to ensure your device has the latest features, security patches, and performance improvements.
- Go to Settings > System > System update.
- Follow the on-screen prompts to download and install any available updates. Ensure your phone is sufficiently charged or connected to a power source during updates.
Battery Care
- Avoid extreme temperatures, as they can degrade battery life.
- Do not leave the phone charging for extended periods after it has reached 100%.
- Use only the original charger and cable provided with your device.
Troubleshooting
Common Issues and Solutions
- Phone not turning on: Ensure the battery is charged. Connect to the charger and wait a few minutes before attempting to power on again.
- Apps crashing or freezing: Close background apps. Clear app cache (Settings > Apps > [App Name] > Storage & cache > Clear cache). Restart the phone.
- Poor Wi-Fi/Mobile Data connection: Check if Wi-Fi/Mobile Data is enabled. Restart your router (for Wi-Fi). Ensure your SIM card is properly inserted and has an active plan.
- Battery draining quickly: Reduce screen brightness, disable unnecessary features (Bluetooth, GPS, Wi-Fi) when not in use, close background apps, and check battery usage in Settings to identify power-hungry apps.
- Fingerprint sensor not working: Ensure your finger is clean and dry. Re-register your fingerprint in Settings.
If you encounter persistent issues, consider performing a factory reset (Settings > System > Reset options > Erase all data (factory reset)). Warning: This will erase all data on your phone. Back up important data before proceeding.
Specifications
| Feature | Detail |
|---|---|
| Brand | DOOGEE |
| Model Name | N40 PRO |
| Operating System | Android 11.0 |
| Processor | Helio P60 Octa-Core 2.0GHz |
| RAM | 6 GB |
| Internal Storage | 128 GB UFS 2.1 |
| Expandable Storage | SD card slot up to 256GB |
| Display Size | 6.52 Inches |
| Display Resolution | 720*1600 HD+ |
| Main Camera | 20 MP AI Quad Camera (Sony sensor) |
| Front Camera | 16 MP (Samsung sensor) |
| Battery Capacity | 6380 mAh Lithium-polymer |
| Charging | 24W Fast Charging, OTG Reverse Charging |
| Connectivity | TYPE-C, Wi-Fi 2.4G (b/g/n), Bluetooth 4.2, GPS, Glonass, Beidou, GSM, 3G, 4G LTE |
| Special Features | Fingerprint ID, Ambient Light Sensor, Proximity Sensor, G-sensor, Gyroscope, Compass |
| Dimensions (H x W x T) | 165.2 mm x 75.7 mm x 9.9 mm |
| Weight | 190g (including battery) |
Warranty and Support
Your DOOGEE N40 Pro Smartphone is covered by a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions.
For technical support, troubleshooting assistance, or warranty claims, please contact DOOGEE customer service through their official website or the contact information provided with your purchase documentation.





