Long Delay in Calling the InCallScreen

Process outlined:

Why does the call to the new interface (InCallScreen) take such a long time? (From TwelveKeyDialer to InCallScreen). This makes for a poor user experience.

First:

TwelveKeyDialer.java: 
      dialButtonPressed(){
         ...
         startActivity(intent);
      }

... why is the jump to the new interface (InCallScreen) slow?

Last:

InCallScreen.java:
      onCreate(){
       ...
      }    
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