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Multi-SIM-card mobile terminal network locking method

A mobile terminal and network technology, applied in the field of communication, to achieve the effect of easy implementation, effective and rapid implementation

Inactive Publication Date: 2017-11-07
上海优思通信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Now China's three major mobile operators have common bands on many LTE frequency bands, such as China Unicom and China Telecom in band1 and band3, China Mobile, China Unicom and China Telecom all have common frequency bands supported on band40 and band41, that is, as long as it is a mobile phone that supports full Netcom , plug in the SIM card of any operator to register on the 4G network, and many operators subsidize their own mobile terminals. Operators do not want their subsidized mobile terminals to be able to use SIM cards of other operators. The 4G network provides data services, so the LTE network of the SIM card of other operators is usually locked, that is to say, the SIM card of other operators can only use its 2G or 3G data services

Method used

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  • Multi-SIM-card mobile terminal network locking method

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Embodiment Construction

[0014] see figure 1 As shown, the method for implementing the multi-SIM card mobile terminal network locking of the present invention is based on the high-pass platform design, and the method includes the following steps:

[0015] Step 1. Initialize the UIM driver when starting up, identify the SIM card, and read out the card's ICCID (ICCID: Integrate circuit card identity, integrated circuit card identification code, that is, the SIM card number);

[0016] Step 2, judging whether the current SIM is the main card or the secondary card, in the actual implementation, it is judged according to the card slot inserted into the SIM card, if it is the main card slot, it is considered as the main card, and the secondary card slot is considered as the secondary card, If it is a secondary card, allow it to register with the network, set the status of the SIM card to active (active), if it is the main card, follow step 3;

[0017] Step 3, judge whether the ICCID of current SIM card is t...

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Abstract

The invention discloses a multi-SIM-card mobile terminal network locking method. The multi-SIM-card mobile terminal locking method comprises the steps of 1, initializing a UIM driver during startup, identifying an SIM card and reading the card number of the SIM card; 2, judging the current SIM card is a primary card or a secondary card; if the current SIM card is the secondary card, allowing the current SIM card to register the network and setting the state of the SIM card to be an activated state; otherwise, carrying out the step 3; and 3, if the current SIM card is the primary card, judging whether the ICCID of the current SIM card belongs to the SIM card of the operator subsidizing the mobile terminal; if so, allowing the current SIM card to register an LTE network; if not, carrying out the following sub-steps, including, (1) disenabling the LTE network function by a wireless protocol stack of a Modem communication module, and (2) notifying an APP layer to set the network mode as a 2G / 3G network supported by the operator corresponding to the current ICCID.

Description

【Technical field】 [0001] The invention belongs to the communication field, in particular to a network locking method for a multi-card mobile terminal. 【Background technique】 [0002] Now China's three major mobile operators have common bands on many LTE frequency bands. For example, China Unicom and China Telecom have bands 1 and 3. , plug in the SIM card of any operator to register on the 4G network, and many operators subsidize their own mobile terminals, operators do not want their subsidized mobile terminals to be able to use SIM cards of other operators The 4G network provides data services, so the LTE network of other operators' SIM cards is usually locked, that is to say, inserting other operators' SIM cards can only use its 2G or 3G data services. Once the contract period is locked, the lock on the mobile terminal will be released. Specifically, the software version will be upgraded through fota, so that the mobile terminal can support LTE networks of all operators....

Claims

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Application Information

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IPC IPC(8): H04B1/3816H04W8/18H04W8/20H04W8/26H04W12/02H04W88/06G06F9/445
CPCH04B1/3816G06F8/65H04W8/183H04W8/205H04W8/26H04W12/02H04W88/06
Inventor 汪金文冯晓婵冀雅坤
Owner 上海优思通信科技有限公司
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