I need a call app that is visually very similar to the standard app on android. However, I do not want the app to actually make any call. Instead, when the "call" is made, it instead plays an MP3 of a phone ringing as if it is attempting to make the call, but a call never goes out. Ideally, it looks and behaves like the standard call app, when a "call" is attempted to go out, it plays the mp3 file as if the phone is ringing indefinitely. I have provided some code that should help, but it sends out a call and doesn't play the mp3, so that functionally would have to be added. A simple and easy project.