App not being shutdown properly on the iPhone

onExit() is not called when running on iPhone.

workaround: in iPhoneMain.mm

void _iPhoneGameWillTerminate(){
	Con::executef( 1, "oniPhoneWillTerminate" );
	Con::executef( 1, "onExit" );
}

or you could add oniPhoneWillTerminate in your script code that does whatever onExit does.