Hongmeng Do Not Disturb setting is invalid

The solution to the invalid DND setting of this system is as follows:

1. Check the settings: You need to check whether the DND setting is correct. In the Hongmeng system, you can click "Me" in the lower right corner of the main interface to set the Do Not Disturb mode to turn on or off the Do Not Disturb function, and you can set a specific time period.

2. Check the application settings: If you find that the do not disturb function is still invalid in some applications, it is because the settings of these applications override the system settings.

3. Restart the device: Sometimes, restarting the device can solve some software problems, including the problem of invalid do not disturb settings.