Installing an iphone app?

Hey guys I have some problems installing apps on my iphone. I created the certificate the provisioning file etc.. I did everything but it seems that xcode does not recognize my iTouch. (I have already registered it)

I want to install my unity app but Im doing some tests with other simple OBJ - C apps

Any ideas on where to find more info or explicit tutorials about this topic?

(I have seen the tutorals on the apple website for developers but they dont have one where you actually install the app on the iphone)