Keep in mind (if this is what u mean) all phones weather you have money in an account with a carrier or not it can still make a 911 callĀ but nothing else. This is for Canada not sure if its the same in the USA.
Depending on what carrier you have (example Telus) you can dial #123 and push ur greenĀ (send) button and it will tell u when ur money or contract runs out or if you hold on this line an agent will answer all your questions on what is on your account.