Ring Up SMS

The program is very simple to use and allows us to find our phone in silence immediately. When the program is first installed on the phone, we ask for a keyword from it (the word "ring" shown on the first screen in the example). After you have written this word, press the button to exit the installation screen. If we can not find it when our phone is muted, we can send it to another phone to send it to our own phone and let it ring and flash so that it can be switched on until we close it.

Important: For your app to work with Android 6.0 (Marshmallow) and above

Settings -> privacy -> app permissions -> sms -> telefonumCal (last picture)

You need to set it.