Coding method of mobile user equipment

An equipment identity coding method of a mobile terminal comprising:

• receiving a first input command comprising a first equipment identity from a first terminal;
• generating a first security code when the first input command is received;
• transmitting the first security code to the terminal;
• coding the first equipment identity and the first security code;
• storing the coded first equipment identity and the first security code in the mobile terminal;
• receiving a second input command comprising a second equipment identity and a second security code from a second terminal;
• comparing the first security code with the second security code when the second input command is received;
• generating a third security code if the first and second security codes match;
• transmitting the third security code to the second terminal;
• coding the second equipment identity and the third security code;
• and
• storing the second equipment identity and the third security code in the mobile terminal, wherein the first equipment identity is changed to the second equipment identity, wherein each of the first and second equipment identities comprises an International Mobile Equipment Identifier (IMEI).

An equipment identity coding method of a mobile terminal comprising:

• receiving an input command comprising of a second equipment identity and a second security code from a terminal;
• determining whether a first security code is stored in the user equipment when the input command is an equipment identity write command;
• determining whether the first and second security codes match when the first security code is stored in the user equipment;
• generating a third security code if the first and second security codes are identical with each other;
• transmitting the third security code to the terminal;
• coding the second equipment identity and the third security code
• storing the coded second equipment identity and the third security code in the mobile terminal, wherein the second equipment identity contains an International Mobile Equipment Identifier (IMEI).

A method for reading and executing an equipment identity code of a mobile terminal, the method comprising:

• receiving, at a user equipment, an input command comprising of a second equipment identity and a second security code from a terminal;
• determining whether a first security code is stored in the user equipment when the input command is an equipment identity write command;
• determining whether the first and second security codes match when the first security code is stored in the user equipment;
• and
• generating a third security code if the first and second security codes match;
• transmitting the third security code to the terminal;
• and
• coding the second equipment identity using the generated third security code,
• wherein a first equipment identity is changed to the second equipment identity, and wherein the second equipment identity contains an International Mobile Equipment Identifier (IMEI).

A processor-readable storage media storing a software program to allow a processor to read and execute a coding method of a mobile terminal, the method comprising:

• receiving an input command comprising of a second equipment identity and a second security code from a terminal;
• determining whether a first security code is stored in the user equipment when the input command is an equipment identity write command;
• determining whether the first and second security codes match when the first security code is stored in the user equipment;
• and
• generating a third security code if the first and second security codes match;
• transmitting the third security code to the terminal;
• coding the second equipment identity and the third security code;
• and
• storing the coded second equipment identity and the third security code in the mobile terminal,
• wherein a first equipment identity is changed to the second equipment identity, and wherein the second equipment identity contains an International Mobile Equipment Identifier (IMEI).