Trouble with activating my new iphone?

I was trying to activate my dad's iphone. And he doesn't have an email so when i turned on the phone, i pressed skip when the page to enter or create an itunes account came up. So then the phone turned on so i went to att.com/activations to try to activate it but it says that it couldn't because an iphone has to be connected to itunes. So i made him an email and an itunes account. But it still wouldn't work. So i plugged his phone into my computer and restored it. I repeated the steps all over again from the very beginning with the language setting, country, use siri and all those and this time signed into itunes with his username. So hoping that i would be able to activate his phone again, i went to att.com/activations but it said the same thing. Any ideas what to do next? Do I have to go talk to the att people?

If all the steps to register the phone have been done correctly and you can use all features but the phone, then he needs to arrange for AT&T to transfer his phone connection to the iPhone(if CDMA) or insert an active microsim linked to his phone number.