Abstract: The disclosure provides a method for configuring a locking strategy of a mobile terminal, comprising: setting, at a locking strategy setting terminal, relevant information of a locking strategy which needs to be executed by a mobile terminal and transmitting the relevant information to the mobile terminal, when the mobile terminal determines that the mobile terminal is currently unlocked, storing the relevant information of the locking strategy which needs to be executed by the mobile terminal; or, inputting, at the mobile terminal, relevant information of a locking strategy which needs to be executed, and storing the inputted relevant information of the locking strategy which needs to be executed. The disclosure further provides a method for applying a locking strategy of a mobile terminal as well as a system and a terminal mobile for configuring a locking strategy of a mobile terminal.

Abstract: The disclosure provides a method, device and system for unlocking a mobile terminal by an operator. The method includes the following steps. An operator device receives an unlocking request from the mobile terminal, wherein the unlocking request carries unlocking identification information; the operator device determines to allow the mobile terminal to unlock according to the unlocking identification information, and according to the unlocking identification information, queries a cryptographic key list database pre-stored in the operator device to obtain an unlocking cryptographic key; and the operator device sends the unlocking cryptographic key to the mobile terminal to ensure that the mobile terminal carries out the unlocking according to the unlocking cryptographic key. According to the disclosure, the problem of relatively poor safety of unlocking by a mobile terminal under the control of an operator is solved.

Abstract: The disclosure provides a method for configuring a locking strategy of a mobile terminal, comprising: setting, at a locking strategy setting terminal, relevant information of a locking strategy which needs to be executed by a mobile terminal and transmitting the relevant information to the mobile terminal, when the mobile terminal determines that the mobile terminal is currently unlocked, storing the relevant information of the locking strategy which needs to be executed by the mobile terminal; or, inputting, at the mobile terminal, relevant information of a locking strategy which needs to be executed, and storing the inputted relevant information of the locking strategy which needs to be executed. The disclosure further provides a method for applying a locking strategy of a mobile terminal as well as a system and a terminal mobile for configuring a locking strategy of a mobile terminal.