I have not used my phone in months. I am now ready to start using it again and it states that my phone number is not valid and I can not re-register my sim card? What do I need to do to start using my prepaid service again?
I'm afraid you may have lost your account, Autumn :( You have to keep your base plan alive at least within 90 days of expiry. You'll need to buy a new SIM card and start a new account (with a new number).... what date did your plan expire?