title: Is it possible to implement Auto Attendant with Android or iPhone?
body: <p>To block unwanted phone calls I would like to develop an app that would answer the phone and ask the caller for their name and to press # to complete. Then the phone would play the recorded name and allow the user to either accept the call or block it.</p>
  
  <p>Before setting out I want to know at a high level if this type of functionality is even possible with the APIs exposed by Android or iOS.</p>