Hello, i had almost the same problem with you and i came across this answer...
The start button has been destroyed and when i say destroyed, i mean we can't press it anymore/ o i am talking about a useless button anymore...
Is there any way to make android phone start even only once, so that after that, do whatever solutions (e.g. software restart or software reset or locking) you proposing here?? Can the button be always pressed, i think this could be a solution, or it will keep locking the phone after that?
thank you.