REMOVE LOCK SCREEN SAMSUNG Android 8.0 Hello my friends I open the system.img by HXD and remove the locksettings.db but with Android 8.0 the phone hang on the Samsung logo Is it a solution to bypass the lock please
Any modifications to your system will cause a boot loop... What you are seeing "logo"  ...

You need to flash that stock system.img without the modifications and then you need to log in to the account associated with the device.. 

If you've forgotten the account details, Use a computer to do the recovery process.. And then use the new details to log in.