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Method for writing data in user identification module card and mobile terminal

A technology of subscriber identification module and mobile terminal, which is applied in the direction of electrical digital data processing, digital data processing components, telephone structure, etc., and can solve problems such as content loss, incorrect data recording, and inability to recover

Active Publication Date: 2014-06-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the mobile terminal is updating a record with too long content, if there is a sudden power failure or abnormal function, it may only complete the sending of a part of the command APDU and the receiving of the response, resulting in the partial loss of the content of this data record and cannot be recovered. , that is, an incorrect data record will be left in the SIM card

Method used

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  • Method for writing data in user identification module card and mobile terminal
  • Method for writing data in user identification module card and mobile terminal
  • Method for writing data in user identification module card and mobile terminal

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Embodiment Construction

[0022] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0024] The first embodiment of the present invention relates to a method for writing data in a SIM card. In this embodiment, an example of writing a longer multimedia message notification record (MMS Notification) in the SIM card is used for illustration. It is divided into 2 components, which are stored in the EF of the record type MMSN and EF ...

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Abstract

The invention relates to a mobile communication technology, and discloses a method for writing data in a user identification module card and a mobile terminal. In the invention, a bit in an EF file marks that a quite long data record is being written in, and whether the data record is written in is marked through the value of the bit. Therefore, when the mobile terminal or an SIM card is abnormal or powers off suddenly the mobile terminal can know some updated data contents are lost through the value of the bit, i.e. the data record is incorrect; and therefore, the data in the SIM card which is being updated is judged as invalid, so that after the mobile terminal or the SIM card recovers normal or is electrified again, the data can be written in again or a user can choose to delete the data, so as to ensure the accuracy of the updated data in the SIM card.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a mobile terminal in the mobile communication technology. Background technique [0002] Mobile communications are changing the way people live and work. Mobile communication systems involve many disciplines, such as telecommunication network technology, computer network and terminal technology, signal processing technology, multimedia transmission technology, VLSI design technology, embedded real-time multitasking software technology, microwave and electromagnetic field technology, etc. These technologies Mutual integration and penetration, specially used to carry various mobile services. [0003] In the mobile communication system, the module that provides user identification is an important part of the mobile terminal equipment. In order to facilitate the user to replace the device without having to change the number or re-enter information such as the phone book, the module ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/16H04M1/02H04M1/675
Inventor 金逸
Owner SPREADTRUM COMM (SHANGHAI) CO LTD