Look at how and when you pay. If you pay before each month starts and your service stops when you miss a payment, you are prepaid. If you get a bill after the month ends, passed a credit check when you signed up, or pay off a phone in monthly installments, you are almost certainly postpaid. Your carrier’s app, your latest bill, or a quick call to customer service will confirm it. Our prepaid vs. postpaid guide explains the differences in detail. If you are postpaid and ready to leave, read how to switch phone carriers, learn how number porting works, and confirm your device is an unlocked phone. Then compare Vouch Mobile plans and check coverage at home.