How do I get billed if I change my rate plan?

We bill according to the rate plan that is in place on the last day of the billing cycle. So, if you change your rate plan in the middle of the billing cycle, your next invoice will be based on the new rate plan. If your plan has been automatically upgraded because you’ve gone over the minutes or data provided on your current plan, the upgraded rate plan and price will remain in place unless you change it.