Mobile communications device, and method of updating telephone directory of mobile communications device

Abstract

A mobile communications device includes: a telephone directory storage unit for storing a telephone directory; a comparator for comparing a service identifier included in a received message with a service identifier stored in the telephone directory; and an update unit for updating the telephone number stored in the telephone directory. If the service identifier corresponding to the telephone number received in the message matches the service identifier stored in the telephone directory, the update unit updates the telephone number stored in the telephone directory with the received telephone number.

1 . A network transmitter for use in a mobile communications system, comprising:
 a message generator for generating messages each of which comprises at least one telephone number and at least one associated service identifier; and   a transmitter coupled to the message generator for transmitting messages generated by the message generator.   
     
     
         2 . The network transmitter according to  claim 1 , wherein said message further comprises a message identifier. 
     
     
         3 . The network transmitter according to  claim 1 , wherein the message generated by the message generator is a GSM cell broadcast message. 
     
     
         4 . The network transmitter according to  claim 1 , wherein the message generated by the message generator is a 3G service area broadcast message.