Mobile phone for authenticating sim card and method thereof

A mobile phone comprising:

• an input unit for generating input signals in response to user inputs;
• a non-erasable programmable memory for storing at least one phone number, wherein each of the at least one phone number corresponds to a SIM card;
• a display unit for displaying information;
• and
• a control unit, further comprising:
• a number acquiring module for acquiring a phone number of a SIM card inserted to the mobile phone when the mobile phone is powered on;
• a determining module for comparing the acquired phone number with the at least one phone number in the non-erasable programmable memory and determining whether the non-erasable programmable memory has stored the phone number of the inserted SIM card;
• and
• an output control module for controlling the display unit to display information which prompts authentication success when the determining module determines that the non-erasable programmable memory has stored the phone number of the inserted SIM card, and for controlling the display unit to display information which prompts authentication fail when the determining module determines that the phone number of the inserted SIM card does not exist in the non-erasable programmable memory.