If you have a postpaid plan, you don't have to worry about having available credit for the renewal of minutes, SMS, and mobile data. The renewal always occurs on the 1st day of each month. For prepaid tariffs, the renewal of benefits happens on a fixed day, after the deduction of the monthly fee from your credit balance. To renew your minutes, SMS, and mobile data, you need to have available credit equal to or greater than the monthly fee. If you don't have sufficient credit, you have until 2:00 PM to recharge.