I HAVE AN ALCATEL SMART PHONE AND THE $20 AND $30 CARDS WORK FOR ME, MAINLY USING FOR TALK AND TEXT. FOR A LOT OF INTERNET USE, PROBABLY WOULD BE BETTER TO USE WIFI BECAUSE BECAUSE I THINK THAT THE AMOUNT OF DATA PROVIDED BY THESE BASIC CARDS WOULD RUN OUT FAIRLY FAST BUT YOU COULD TRY IT TO SEE. YOU COULD ALSO BUY DATA CARD TO GET MORE DATA FOR INTERNET USE. I BOUGHT MY PHONE FROM TRACFONE YEARS AGO AND I ONLY USE TRACFONE CARDS, I DO NOT HAVE A SERVICE PLAN WITH VERIZON, TMOBILE, ETC. IF YOU HAVE A SERVICE PLAN WITH A PROVIDER OTHER THAN TRACFONE, I DO NOT KNOW HOW THAT WOULD WORK OUT. I HAVE A TRACFONE ACCOUNT AND LOGIN ON MY LAPTOP TO ADD THE AIRTIME TO MY PHONE, JUST EASIER FOR ME WITH LARGER SCREEN VS PHONE SCREEN. YOU CAN TRY TO CHAT WITH TRACFONE TO CONFIRM WHAT WORKS WITH YOUR PHONE. GO TO TRACFONE.COM, SCROLL TO BOTTOM OF PAGE, UNDER CURRENT CUSTOMER CLICK SUPPORT, THEN NEW PAGE POPS UP, CLICK ON CHAT. HAVE YOUR PHONE TYPE AND MODEL NUMBER AVAILABLE, ALSO ANY INFORMATION ABOUT ANY EXISTING SERVICE PLAN YOU HAVE WITH YOUR PHONE.