The charges for a typical cell phone plan include charges for the plan itself, which may include air time for calls, text message costs, data rates and various fees along with federal and state taxes. A typical fee is one associated with the 911 emergency response system.
There may also be changes for additional services and features such as caller ID and enhanced voice mail, additional lines, roaming and usage that exceeds plan limits. Many plans include either a fixed or unlimited amount of certain items. Older plans usually offer unlimited calls during nights and weekends with a specified number of minutes allowed for calls made at other times. Text messages may also be included on an unlimited basis or be billed by the message.
Modern plans typically include unlimited calls and text messaging with a specified amount of data usage. Customers may be billed by the megabyte or gigabyte for data usage that exceeds the amount included in the plan.