Patent ID: 8649769

Claim:
A mobile terminal, comprising: an incoming call number temporary storage module, which is configured to store an incoming call number to be authenticated; a receiving module, which is configured to receive a short message sent from a network side; an authentication short message identifying module, which is configured to identify an authentication short message among received short messages, validating said the authentication short message and send out the authentication information in the said authentication short message when the said authentication short message is validated; wherein, the authentication short message identifying module is configured to extract the authentication information from the authentication short message, search numbers to be authenticated stored in the incoming call number temporary storage module using a number to be authenticated in the authentication information, and determine that the authentication short message is valid if an identical number to be authenticated is searched out; an authenticating module, which is configured to receive the said authentication information, and authenticate the corresponding incoming call number in the incoming call number temporary storage module; and a missed call writing module, which is configured to write an incoming call number that is passed the authentication into a missed call record=; a timing module, which is triggered when a number to be authenticated is stored into the incoming call number temporary storage module and is configured to determine a valid time for receiving the authentication short message.