Lazy people can't see the news after listening to the book lock screen.

Hello, I want to ask lazy people why they can't see the news after listening to the book and locking the screen. Lazy people can't see the message content after listening to the book lock screen because your mobile phone background is automatically deleted, and your mobile phone background memory is less, which occupies most of the mobile phone memory after opening the lazy people to listen to the book. In order to prevent the system from being stuck, other background programs that send messages will be automatically closed, so that lazy people can't see the message content after listening to the book and locking the screen, because the background of your mobile phone is automatically deleted.