System and method for roaming for prepaid mobile telephone...

System and method for secondary traffic charging in a radio tele

System and method for setting subscriber-defined usage limits on

System and method for updating a time remaining value

System and method for verifying subscriber data records in a...

System and method of billing based on the reported traffic...

System and method of billing for minutes shared between a...

System and method of charging for user traffic except...

System and method of detecting and preventing fraudulent long di

System and method of implementing a private charge rate in a rad

System and method of managing contactless payment...

System and method of managing contactless payment...

System and method of providing service information to a...

System and method of purchasing products and services using...

System and method to support multiple wireless accounts for...

System and methods for managing the utilization of an...

System and/or method for call intercept capability in a global m

System for and a method of controlling access to a service...

System for associating user selectable information in...

System for estimating traffic rate of calls in wireless...