30 dollar plan is for 1000 minutes and 1000 messages and the 45 dollar plan is all unlimited
Each is for 1 month. The $30 plan includes 1000 minutes, 1000 text messages, and 30MB of data. The $45 plan is unlimited.
$45 let's you use the service as much as you can in a 30 day period.
$35 gets you 1000 units of talk, 1000 units of text, and 30mb of Internet. Once your units are used up you have to add another plan even if you still have a service date. And everything counts against those. Inbound, outbound calls, inbound, outbound texts, all count. Texts are billed at .30 , so that's 300 messages. And phones that can receive email messages, those can add up quickly because some messages get chopped up into multiple messages.
If you talk and text several times a day you should just go with the $45 plan.