Telcel Internet

Thanks Chris: I think I understand. I could for instance put 600 pesos on the modem phone number. Then I order say a 300 peso plan on the laptop that is good for 30 days. BUT when the 30 days is over if I do not order another 300 peso plan or some other plan they will charge me by the MB at a high rate. So what happens if I try to use more than my alloted MB in the first 30 days. Do they apply the rest of the credit at higher rate? What if I do not apply the credit? Will it remain in my account until I want more airtime?

Moisheh