How detect incoming and outgoing call end state? iphone

Question

I have a requirement that is the app should disappear after install and when incoming or outgoing call, soon after the call the app should prompt and display the screen.

Answer 1

Use following notification to find the call status.Add CoreTelephony.framework

#import 

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(callReceived:) name:CTCallStateIncoming object:nil];
   [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(callEnded:) name:CTCallStateDisconnected object:nil];
   [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(callConnected:) name:CTCallStateConnected object:nil];