Method for preventing network locking information of terminal device from being cracked

A method for preventing network locking information of a terminal device from being cracked, the method comprising:

• S1:
• monitoring a network status of a terminal device upon being powered on, and determining whether the terminal device resides on a mobile network;
• S2:
• if it is monitored that the terminal device resides on a mobile network, acquiring network locking relevant information of the terminal device, if not, continuing monitoring;
• S3:
• comparing the acquired network locking relevant information with network locking information stored in the terminal device, if the network locking information changes, reporting relevant information of the terminal device to a server, conversely, if the network locking information is unchanged, shifting to S 8;
• for terminal devices being powered on for the first time, because no network locking information is previously stored, the relevant information of the terminal devices must be reported to a server;
• S4:
• acquiring, by the server, request data information transmitted from the terminal device, and looking up, by the server, whether there exists corresponding network locking information data package according to the relevant information of the terminal device, and transmitting relevant information to the terminal device;
• S5:
• receiving, by the terminal device, the relevant information sent back from the server, examining, by the terminal device, whether there is network locking data package information, if yes, encrypting and storing the network locking information, and downloading the network locking data package, conversely, if the server does not issue the network locking data package information, encrypting and storing current network locking information, and shifting to S8;
• S6:
• after downloading the network locking data package, updating, by the terminal device, the network locking information, using the downloaded network locking data package;
• S7:
• reporting, by the terminal device, upgradation result to the server after the upgrading is finished;
• and
• S8:
• the flow ends.