No provisioned iOS devices are available. Connect an iOS device or choose an iOS simulator as the destination.

One day, I want to write a Iphone app for my son, then Just download the latest Xcode, and plug my Iphone to the Mac, supposedly,XCode should run the profile provisioning, I just click to Run the app. However, I get an error,


here, it’s a versioning issue, First, Click Window->Organizer, check Iphone OS

So for the Phone, It runs on 4.2.1,then make sure project building setting, using the same base level of SDK

by default, Xcode use the lastest sdk , that’s why you see the error.
Switch it to 4.2, then you will see you device in the target list,