how to put phone call functionality in iphone application
I am making an application in which there is a text field to enter phone number, now I want whenever user put number on that text field, there must be a button get generate to call on that particular number.

Anyone know about this functionality, then please help me.

Thanks alot. 
how to put phone call functionality in iphone application
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I am making an application in which there is a text field to enter phone number, now I want whenever user put number on that text field, there must be a button get generate to call on that particular number.

Anyone know about this functionality, then please help me.

Thanks alot. 