15.4.1App There is no notification from the APP.

do not disturb mode or focus mode is turned on.

when do not disturb mode or focus mode is turned on, the 15.4.1App will not be notified.

APP (abbreviation of Application) generally refers to mobile phone software, mainly refers to the software installed on smart phones, which improves the shortcomings and personalization of the original system. The main means to make mobile phones perfect their functions and provide users with a richer experience. The operation of mobile phone software requires a corresponding mobile phone system. The commonly used mobile phone systems in the market include Apple's iOS, Google's Android system, Saipan platform and Microsoft platform.