Which of the following are true about PhoneStateIntentReceiver.notifyPhoneCallState?

Which of the following are true about PhoneStateIntentReceiver.notifyPhoneCallState?

Answers:

• notifyPhoneCallState has to be called if your application wishes to receive a notification about an incoming phone call.

• notifyPhoneCallState is a call back function that is called when the call state changes.
• notifyPhoneCallState is called to initiate a call from the device.
• notifyPhoneCallState is used to send notifications about call states.
• notifyPhoneCallState gets called when the device receives an incoming phone call.