ANRs (or Activity not responding) are common errors that you will come across when developing Android applications. One of the reason for its occurence is when the main
thread(UI thread) of the application blocks for more than it should (5 seconds, I think).
Further Reading...
In your case, it is "com.android.phone" that is blocking for too long and not your application. You can either choose to wait or kill the process, as Ksh already mentioned.