After the watch is normally connected to the mobile phone, the watch notification and some functions will be blocked during the classroom mode, and the functions will return to normal after the classroom mode.
Open class mode:
Open the "Health" APP and click "Devices >"; More functions > campus use "Open the" Start class mode regularly "button, and select the time period to use class mode in the time period setting.
When the classroom mode is turned on, the watch will enter the flight mode by default. If you don't need to enter this function, just turn off "Automatically Enter Flight Mode" on the "Start Class Mode at Regular Time" page.