1 Metro PCS usually has very good payment process times. 2  It only takes a couple of minutes if itâs payed online, at an authorized dealer, at a payment machine, or over the phone. 3  However, it can take up to 2 hours. 4  If a payment is made at a drop box with a check or money order, the payment can take up to 48 hrs. The table above gives the estimated time required to process a payment for each payment method. 2  Metro PCS usually has very good payment process times. 3  It only takes a couple of minutes if itâs payed online, at an authorized dealer, at a payment machine, or over the phone. 4  However, it can take up to 2 hours.