Pre-paid account balance notification

摘要

A method of informing a portable electronic device of a number of available pre-paid text messages, comprising billing a pre-paid subscriber account for a predetermined number of text messages to be sent by a portable electronic device; incrementing a first count by an application executing on a computer based on the predetermined number of text messages purchased; determining by the application a second count indicating a remaining balance of text messages based on how many text messages have been one of received and sent by the portable electronic device since billing the pre-paid subscriber account based on the first count; and sending by the application a message comprising the second count to the portable electronic device.