NET10 USES THE NETWORKS OF AT&T AND VERIZON WHICH IS WHY COVERAGE AND RECEPTION IS SO GOOD, YOU CAN GET AUTOMATIC TOP UP EVERYMONTH OR GET ROLL OVER MINUTES IF YOU USE THE NET10 PHONE CARDS. SOME NET10 CUSTOMERS ARE SAVING HUNDREDS OR EVEN OVER A $1000 /YEAR BY SWITCHING FROM A CELL PHONE CONTRACT.