ATT Activation Issues

Anyone having extreme difficulty activating their iphone 5 on ATT? Phone works great, but I cant get Phone.app to work nor can I receive SMS. iMessage works, WiFi works, ATT rep says it's b/c of network traffic not allowing the device to communicate with the network and to work through the activation. I'm presuming they meant too many people trying to activate their new phones at the same time. ATT says could take 24 hours. Any thoughts?

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