Removing Google Account on the phone will erase all of your data.
All described operations you are doing at your own risk.
If want saves your data do a backup before start.
The battery should be at least 50% charged before the start.
Google Account Protection bypass manual
Connect LG G6 H870 to available WiFi network.
Back to the first page Welcome creator.
Select Accessibility button.
Next to Settings button.
Select Vision option.
Turn on Talkback option.
Write big L on the phone screen to open talkback help menu.
Select Talkback settings.
Hold volume up and volume down buttons until you do not hear suspend talkback message and suspend menu pop up.
Realise volume buttons and tap an Ok button to confirm talkback off.