Mainboard, method for realizing network locking/ card locking function and mobile terminal

Abstract

The disclosure discloses a main board, wherein the main board includes: a first pad; a second pad connected to the first pad; and a third pad connected to both the first pad and the second pad. The disclosure also discloses a method of implementing network / card locking, wherein the method includes: transmitting, by an encryption chip, a blocking request to a central processing unit when the encryption chip detects authentication-related information that is provided by a user identification unit to the central processing unit, and determines that the authentication-related information does not meet a preset network / card locking requirement from a mobile operator; blocking, by the central processing unit, the mobile terminal from normal operation when receiving the blocking request. Meanwhile, the disclosure also discloses a mobile terminal in which network / card locking is implemented, wherein the mobile terminal includes a central processing unit, a user identification unit and an encryption chip. By using the main board, the method and the mobile terminal of the disclosure, the costs for producing a mobile terminal which is respectively adapted to different sales modes of mobile terminals can be reduced.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a main board, a method for realizing the network lock / card lock function and a mobile terminal. Background technique [0002] At present, in order to attract mobile terminal users to access the network, mobile operators around the world will adopt price subsidy promotion methods, specifically: mobile operators sell mobile terminals to customers at a price lower than cost, or even give them to customers for free The terminals are all locked to the network of the mobile operator, or locked to the mobile terminal card sold by the mobile operator, that is, the mobile terminals sold or presented at low cost all have the network locking function. [0003] The device disclosed in the Chinese patent application No. 200610036091.X and titled "A Mobile Terminal Network Locking Device Based on an Encryption Chip", such as figure 1 As shown, the device includes an encryption chip, a cent...

AI Technical Summary

Problems solved by technology

However, in the production process of the mobile terminal, it is obvious that the connection between the central processing unit and the user identification unit of the motherboard obtained according to the above-mentioned patent application wiring is disconnected. If the encryption chip is not connected, the central processing unit and the user identification unit The unit cannot communicate, and the mobile terminal cannot work normally. Therefore, when producing a mobile terminal that does not need a network lock function, it is also necessary to set an encryption chip in the mobile terminal, but the mobile operator lock network is not set in the encryption chip. It is required to turn off the network lock function of the mobile terminal, but obviously this will make the encryption chip idle, waste hardware resources, and increase costs; or, redesign the main board of the mobile terminal that does not need the network lock function, and connect the central processing unit and the user identification unit , so that not only increases the cost of designing, testing and certifying the motherboard, but also increases the cost

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