SYSTEM AND METHOD FOR LOCAL HANDSET CHECK OF THE NXX LOCAL EXCHANGE TO DETERMINE CARRIER

摘要

Systems and method for determining if a network of a call page has been ported to another network. The mobile communications network associated with a received call page is determined based on caller identification (CID) included in the call page and information of local exchange codes and associated mobile carriers stored in local memory of the mobile device. The method determines if the mobile communications network associated with the received call page is valid with regard to an exceptions list. Next it is determined if the determined mobile communications network associated with the call page matches the mobile communications network associated with the mobile device based on the validity determination. The exceptions list identifies phone numbers that have been ported to a mobile communications network that is different that the determined network.