how does cricket paygo auto top-up work?

Your account will be topped-up automatically each month, on your service period end-date, for your next service period.  No action will be required of you once you are enrolled in PAYGo Auto Top-Up.  Your account will be topped-up with the amount equal to the cost of your PAYGo monthly plan, or an amount you choose that is greater than the cost of your plan.  Your account will not be topped-up if your account balance is sufficient to cover your next service period.