Smartphones > vivo > Vivo Y91c

Unlock your Vivo Y91c

Specification Vivo Y91c

Root Vivo Y91c

Firmware Vivo Y91c

Developer Mode Vivo Y91c

Bypass Lock Screen Vivo Y91c

Vivo Y91c Factory Reset

Bypass FRP Vivo Y91c

Secret codes Vivo Y91c

Screenshot Vivo Y91c

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.
• After verifying the data, the removal of the smartphone screen lock will begin. The program will warn you about deleting all data on the phone, to continue working, click OK.
• Wait until the end of the operation, and put your smartphone into recovery mode according to the prompts on the computer screen.
• Click the Next button, then follow the steps recommended by the program to restore the device to factory settings and reboot it. 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.
  
  
• Select Recovery by using the volume up/down buttons to move through the menu and confirm the selection by pressing the power button.
• Using the volume buttons to navigate through the menu, select Wipe data/factory reset. and press the power button
• Confirm the reset and restart your smartphone

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

• You need to wait until the battery of the smartphone is discharged.
• When a few percent of the charge remains, the phone will report this and open a menu with power settings, that is, the lock will be removed.
• You need to open the security settings and disable the lock.

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

• Turn off your smartphone and remove the memory card from it.
• Download Aroma File Manager via computer to your phone's memory card. Insert a memory card into your smartphone.
• Put your smartphone into recovery mode using the button combinations that are suitable for your particular model.
• 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 will need to go to the /data/system folder and delete the files 'gesture.key' and 'password.key' (if you have Android 4.4 or lower) or 'getekeeper.password.key' and 'getekeeper. pattern.key' (if you have Android 5 or higher)
• Reboot your smartphone.

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

• When you try to unlock the phone several times, Forgot password? will appear on the screen. 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.

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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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