Hello, I have recently come back to iOS after using Maemo (linux) and Droid. Droid is hell. Now.. I have made a hello world and such. I am going to start to try a devel a simple game. I plugged my iP4s into my computer and xcode popped up and said do I want to use this phone as a development phone. What happens if I click "Yes"? I want to use it, but what changed in the phone? Can it be used as normal or? Can this be reverted? I have not yet set up an Apple developer account (The $100 per year one).