Unlock your Blackview BV5100 Pro

OS: Android v10 (Q)

CPU: Octa core, 2 GHz, Cortex A53

RAM: 128 GB

Display: 5.7 inches (14.48 cm)

Battery: Li-Polymer

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.
A menu will appear on the screen, press Remove.
The removal of the phone screen lock will begin. Confirm the deletion, click OK.
Wait until the operation is completed, and then put your smartphone into recovery mode according to the prompts on the computer screen.
Click the Next button and follow the instructions on the screen. After rebooting 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 up/down buttons to navigate through the menu, select Recovery and press the power button.
Using the volume up/down buttons to navigate through the menu options, select Wipe data/factory reset. and press the power button.
Confirm hard reset.

3. How to use a low battery to unlock a phone locked with a graphic key.

You need to ensure that the phone battery is discharged. To speed up the process, make sure that the screen is constantly lit.
When the battery has a few percent left, the phone will report this and open a menu with power settings, that is, it will unlock the phone.
You need to open security settings and disable 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 the Aroma File Manager program to the phone's memory card. Insert the memory card back into the phone.
Using the combination of volume and power buttons, boot your smartphone into recovery mode.
In recovery mode, select Install zip -> Install zip from sdcard -> Choose zip from sdcard, go to the archive folder with this program and select it.
You need to go to the /data/system folder and delete the files 'gesture.key' and 'password.key' (for the Android 4.4 or lower operating system) or 'getekeeper.password.key' and 'getekeeper.pattern. key' (for Android 5 operating system or higher)
Reboot your smartphone. The screen lock will be released.

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

After several unsuccessful attempts to unlock the phone, the message Forgot password? will appear. Click on it.
Choose to restore access with your Google Account. You will need to enter your Google Account username and password.
Remove the screen lock in the 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.