Ok im tryin to budget my monthly bills and i wanted to know what are the difference between AT&T Go Services vs Someone with AT&T service with a contract? I've noticed with the att go phone plans they have great deals with international calling vs the contract side of att don't. are the data speeds the same? could i port my number over from the contract side to the prepaid side? i also saw for $60 unlimited talk text 2.5gb of data with hotspot capabilities. so whats the catch?