on/off function is built in. You can go to
Settings > Utilities > Scheduled power on/off.
to set this function
Screen pinning
When screen pinning is enabled, you will not be
able to switch to other screens, such as the
home screen. You will also not be allowed to
open the notification panel or enter the multi-
task management interface.
Enable screen pinning: Go to Settings >
Security & lock screen > Advanced >
Screen pinning. Tap switch to enable this
function.
Use the screen pining: You can use this
feature to fix the current screen until it is
cancelled.
To use this function:
4. Make sure screen pinning is turned on.
5. Tap Recent button to enter the Recent
apps list.
6. Tap the menu button in the upper right
corner of the app card, then tap Pin.
Cancel screen pinning: If you turn on screen
pinning and select Ask for unlock PIN
before unpinning, you will be asked to input
an unlock PIN to cancel screen pinning.