Initializing method of mobile communication terminal

Abstract

The present invention is an initialization method of mobile communication terminal belonging to the mobile communication terminal technique. It comprises the following procedures: confirming whether there is personal identification setting when the mobile communication terminal is opened; reading the IMSI value from the SIM card if it is confirmed that the personal identification exists; comparing the consistency between the network identification code extracted from the IMSI value to the network identification code saved in the memorizer; after the comparing, if the two are identical, initializing with a normal state; if the two are not identical, it is recognized as using the SIM card provided by other network operators, initializing at the emergency state. Therefore it is restrained to using the SIM card which is provided by the corresponding network operator, thereby can prevent the illegal using which is caused by the missing of the terminal machine and the like reasons. Secondly in the invention it uses the character that the different SIM cards are made to have different properties by the different network operators, to realize the function that it restricts using the SIM cards provided by other network operator in the mobile terminal (ME).

Description

technical field [0001] The invention belongs to the mobile communication terminal technology, and more specifically relates to an initialization method of a mobile communication terminal equipped with a smart card. Background technique [0002] GSM-based mobile workstations (Mobile Station: MS, hereinafter referred to as "mobile station") include mobile equipment (Mobile Equipment: ME, hereinafter referred to as "mobile terminal") and smart cards. : Subscriber Identification Module) card (hereinafter referred to as "SIM card"), which generally provides the following three functions. [0003] 1) Prevent unauthorized use of personal cellular phone service through user authentication. [0004] 2) Manage the mobile status of the user to ensure flexible calls during the mobile process. [0005] 3) Support phonebook and SMS functions required by personal services. [0006] In order to provide the above-mentioned functions, the smart card records data such as user information, o...

AI Technical Summary

Problems solved by technology

[0014] However, the defect in the prior art is that the terminal is not limited by the type of SIM card, that is, it is not involved by the network operator, and any SIM card can be inserted into the mobile terminal to use it.

Images