I have an AT&T go phone. You must purchase the phone and I put $25 every 90 days or $100 once a year to keep number current. Calls are 10 cents per minute, texts are 20 cents. If you text a lot, you can purchase a text package. If you pay your account on time, you carry over your unused monies. We have 2 of these phones, one for my husband and one for myself. Service has been available most everywhere and less than $10 per month per phone. We are not huge phone users, just a convenience and travel use.