Android 9/10 full support !!
[Basic service]
The first missed call notification will be activated after the "Alert interval" time specified by user from the time when the screen of the smartphone is automatically turned off after the incoming call has been terminated
However, if the user presses the power button to force the screen lock after receiving a call, the notification is automatically stopped and no longer works.
If missed call notification is not working, you will see on the upper banner why the app did not work when you run the application.
* Unread text message (SMS / MMS) notifications work the same way as the missed call notification above.
[Additional service - User message alert]
If the app notification message displayed on the top of the phone contains a user defined string, it provides a notification function.
For example, you can turn on notifications when your child contains a string you specify in an SMS or SNS app.
E.g. user defined string: '###', message received on SMS or SNS app: '### phone' = > notification action)
[Additional service - Find my phone]
If the app notification message displayed on the top of the phone contains a user defined string, it provides a notification function.
For example, if you forget where you put your phone, you can use another phone to send an SMS or SNS message that contains a string you define, so your phone will ring loudly
[Support Translation]
https://drive.google.com/open?id=1fXNCHrER7phw8vZju1mGF7E2DXIm8F9s02HepF7DuqQ