Method and mobile communication device capable of resuming operating function of temporarily disabled SIM card
US7840234B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 2005 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Aug 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and mobile communication device capable of resuming operating function of a temporarily disable SIM (subscriber identity module) card are provided. The SIM card is disposed in a mobile equipment (ME), in which a code verification state of the SIM card is recorded. When the code verification state is “verification required” state, the ME records an original personal identification number (PIN)/PIN unlock key (PIN/PUK) code corresponding to the SIM card. The method includes the steps of executing a SIM card start-up procedure; determining whether the code verification state of PIN/PUK code is the same with the state stored in the ME and whether a PIN/PUK code re-read from the SIM card is the same with the original one; and determining whether the international mobile subscriber identity (IMSI) value re-read from the SIM card is the same with original one: if so, resume and re-use the SIM card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.