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Unlock your Doogee N40 Pro


 Specification Doogee N40 Pro 
 Root Doogee N40 Pro 
 Firmware Doogee N40 Pro 
 Developer Mode Doogee N40 Pro 
 Bypass Lock Screen Doogee N40 Pro 
 Doogee N40 Pro Factory Reset 
 Secret codes Doogee N40 Pro 
 Screenshot Doogee N40 Pro 

Doogee N40 Pro


OS: Android v11

CPU: 2 GHz, Octa Core Processor
RAM: 6 GB
Display: 6.52 inches, 720 x 1600 pixels
Battery: 6380 mAh, Li-Po Battery


1. Use the Tenorshare 4uKey for Android app.
2. Make a hard reset (factory reset).
3. How to use a low battery to unlock a phone locked with a graphic key.
4. Delete 'gesture.key' and 'password.key' using Aroma File Manager.
5. Restore access to your smartphone using your Google Account.

1. Use the Tenorshare 4uKey for Android app.
  • Connect your smartphone to your PC and launch the 4uKey for Android program.
  • In the menu that opens, click Remove.
  • Smartphone screen lock removal will start.
  • After finishing the lock removal process, put your phone into recovery mode.
  • Click the Next button and follow the instructions on the screen. After starting the smartphone, the screen lock will be disabled.


2. Make a hard reset (factory reset)
  • Turn off your smartphone.Simultaneously press and hold for about 10-15 seconds one of the button combinations:
    Volume down button + Power button;
    Volume up button + Power button;
    Volume down button + Power button + Home button;
    Volume down button + Volume up button + Power button.

  • Using the volume buttons, select Recovery and press the power button.
  • Using the volume up/down buttons to navigate through the menu, select Wipe data/factory reset. and press the power button.
  • Finally, confirm the reset operation.


3. How to use a low battery to unlock a phone locked with a graphic key.
  • You need to make sure that the battery of the phone is discharged.
  • When the battery has a few percent charge left, the phone will notify you and open a menu with power settings, that is, the lock will be removed.
  • You need to open the menu with security settings and turn off the phone lock.


4. Delete 'gesture.key' and 'password.key' using Aroma File Manager.
  • Turn off your smartphone and remove the memory card from it.
  • Copy Aroma File Manager to your phone's memory card. Insert a memory card into your smartphone.
  • Using the combination of volume and power buttons, put the smartphone into recovery mode.
  • In recovery mode, select the option Install zip -> Install zip from sdcard -> Choose zip from sdcard, go to the archive folder with this program and select it.
  • You need to find the /data/system folder and delete the files 'gesture.key' and 'password.key' (for Android 4.4 or lower) or 'getekeeper.password.key' and 'getekeeper.pattern.key' (for Android 5 or higher)
  • Restart your smartphone. The block will be removed.


5. Restore access to your smartphone using your Google Account.
  • After unsuccessful attempts to unlock the phone, Forgot password? will appear on the phone screen. Click on it.
  • You will need to enter your Google Account username and password.
  • Delete in the lock screen settings.

Thomas Nilan
Smartphone Expert
Thomas Nilan is a mobile phone expert with in-depth knowledge of the Android and iOS operating systems, who understands the settings of various hidden features that allow you to expand the capabilities of your smartphone, as well as get information about what is going on inside the phone for future repairs. He is an authority in his field, which has allowed him to become a ghostwriter for several technology publications, and he enjoys writing small mobile applications for testing smartphones.


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