I'd like to buy a ATT GoPhone pre-paid SIM. Once I activate it, if I don't add any money to the account in "x" days the account will be deactivated. I can then re-activate it anytime by adding money to the account, according to Wikipedia: My questions are: 1) How long after the 60 days of no payment can the SIM card be reactivated? A few months? A year? (Keeping the same number isn't important to me) 2) Is the minimum re-fill $15?