Network locking or card locking method and device for a mobile terminal, terminal, sim card, storage media

A method for network locking of a mobile terminal, applied to the mobile terminal, the method comprising:

• sending encrypted data used to authenticate whether the mobile terminal is capable of initializing a Subscriber Identity Module (SIM) card to the SIM card;
• receiving from the SIM card an authentication result which indicates whether the mobile terminal is capable of initializing the SIM card;
• and
• prohibiting initialization of the SIM card when the authentication result indicates that the SIM card cannot be initialized.

A device for card locking of a mobile terminal, applied to a Subscriber Identity Module (SIM) card, the device comprising:

• a first receiving unit, an authentication unit and a first return unit, wherein
• the first receiving unit is configured to receive encrypted data from a mobile terminal;
• the authentication unit is configured to authenticate, according to the encrypted data, whether the mobile terminal is capable of initializing the SIM card, and obtain an authentication result;
• and
• the first return unit is configured to return the authentication result to the mobile terminal.

A device for network locking of a mobile terminal, applied to the mobile terminal, the device comprising a first sending unit, a third receiving unit and a prohibition unit, wherein

• the first sending unit is configured to send encrypted data used to authenticate whether the mobile terminal is capable of initializing a Subscriber Identity Module (SIM) card to the SIM card;
• the third receiving unit is configured to receive an authentication result which is returned by the SIM card and indicates whether the mobile terminal is capable of initializing the SIM card;
• and
• the prohibition unit is configured to prohibit initialization of the SIM card when the authentication result indicates that the SIM card cannot be initialized.

A Subscriber Identity Module (SIM) card, comprising:

• a SIM card file system and a device for card locking of a mobile terminal, wherein
• the SIM card file system is configured to initialize information of the SIM card;
• and
• the device for card locking of a mobile terminal comprises a first receiving unit, an authentication unit and a first return unit, where
• the first receiving unit is configured to receive encrypted data from a mobile terminal,
• the authentication unit is configured to authenticate, according to the encrypted data, whether the mobile terminal is capable of initializing the SIM card, and obtain an authentication result, and
• the first return unit is configured to return the authentication result to the mobile terminal.

A mobile terminal, comprising:

• a Subscriber Identity Module (SIM) card initialization system and a device for network locking of a mobile terminal, wherein
• the SIM card initialization system is configured to read, from a SIM card file system, information for initializing a SIM card, and initialize the SIM card;
• and
• the device for network locking comprises a first sending unit, a third receiving unit and a prohibition unit, wherein
• the first sending unit is configured to send encrypted data used to authenticate whether the mobile terminal is capable of initializing the SIM card to the SIM card,
• the third receiving unit is configured to receive an authentication result which is returned by the SIM card and indicates whether the mobile terminal is capable of initializing the SIM card, and
• the prohibition unit is configured to, when the authentication result indicates that the SIM card cannot be initialized, prohibit the SIM card initialization system from reading, from the SIM card file system, the information for initializing the SIM card, and initialize the SIM card.