Metro PCS payments can be made online through their Express Pay Option. Just head over to metropcs.com and click on their Manage & Pay option. You can use the express mode or you can login in to your metro pcs customer account to pay the bill. 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.