How to detect a touch in iphone for unity3d ?

Can anyone help me out to detect a touch in unity3d ?

Read the documentation for iPhoneInput. (file:///Applications/Unity%20iPhone/Unity%20iPhone.app/Contents/Documentation/Documentation/ScriptReference/iPhoneInput.html)

Oh, and iPhone Development has its own section on this forum. You might want to check that out too, if you haven’t yet.