How to Block outgoing calls and Text SMS

Question

I am developing an App in which I need to block the teenager from using mobile while driving, I need to block the call and sms. please help . any small hints and clues will

Answer 1

http://code.google.com/p/krvarma-android-samples/source/browse/trunk/DetectCalls/src/com/varma/samples/detectcalls/receivers/OutgoingCallReceiver.java