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 phone to PC with USB cable and launch Tenorshare 4uKey for Android.

In the menu that appears on the PC screen, click Remove.

The program will warn you about deleting all data on the phone, to continue working, click OK.

After finishing the lock removal process, put your phone into recovery mode.

Click the Next button, then follow the steps recommended by the program to restore the device to factory settings and reboot it. After rebooting the smartphone, the screen lock will be disabled.

2. Make a hard reset (factory reset)

To get started, 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 up/down buttons to navigate through the menu options, select Recovery and press the power button.

Using the volume buttons to navigate through the menu, select Wipe data/factory reset. and confirm by pressing 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 left, the phone will report this and open the menu with power settings, that is, it will unlock the phone.

You need to quickly find the page with security settings in the menu and disable the lock.

4. Delete 'gesture.key' and 'password.key' using Aroma File Manager.

You need to turn off the phone and prepare a memory card.

Transfer the Aroma File Manager program using a computer to the phone's memory card. Insert the memory card back into the phone.

Put your smartphone into recovery mode using the appropriate button combination for your model.

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.

After starting the program, you will need to go to the folder /data/system 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)

Reboot your phone. The block will be removed.

5. Restore access to your smartphone using your Google Account.

After several attempts to unlock the phone, Forgot password? will appear on the screen. Click on it.

You will need to enter your Google Account username and password.

Remove the screen lock from the settings.