How to prevent the phone from turning on when going to lock?

Question

Android

There is a Chinese phone based on MT6571-A. I rubbed the ios launcher on it, but for some reason the ios lock remained. And I installed a new launcher. And of course Ruth is right.
But from the drain he has one problem. After blocking, after 5-10 minutes, the phone is cut down completely! I'm thinking how to disable the phone. Help! Any information I can give.