With mobile phones such an integral part of our lives, we need good plans for them. They could either be postpaid or prepaid. In postpaid mobile plans, the consumers sign a contract with the network company; it usually includes a fixed tenure that can be yearlong or more. In prepaid mobile plans, however, there are no contracts, it is more of a pay-as-you-go sort. They are paid in form of minutes and expire once the minutes are used up or when they have reached their expiry period.