Calling Plan - definition
Calling plans usually a part of mobile carrier companies. It varies company to company. Depending on the type of user carrier companies create such calling plan. For example: If someone is using the carrier only for calling options then he/she doesn’t need other features such as internet volumes or SMS. Or in another case, if the user needs only internet but no calling and SMS, then the calling plans will be different from the previous one. Carrier companies create such plans so that user of every type can use their SIM and have full access of what the user likes most.