Mobile communication device having alarming function related to uncovered regions
A technology of mobile communication equipment and coverage areas, applied in wireless communication, services based on location information, security devices, etc., which can solve problems such as user inconvenience
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[0011] figure 1 The mobile phone 10 is equipped with a SIM card 20 allowing access to the mobile network of the national operator. SIM card 20 includes memory and a microprocessor for storing and running computer programs, and in particular Javacard applets 30 .
[0012] The SIM card 20 also includes a timer 32 which is under the control of the applet 30 and can thus be started or stopped by the applet 30 . Timer 32 can send a pulse to applet 30 when a predetermined period of time has elapsed.
[0013] The timer 32 is also configured to be readable by the applet 30 with respect to the current elapsed time as indicated since the last triggering of the timer.
[0014] The SIM card 20 also includes a counter 40 which is under the command of the applet 30 . The counter 40 is incremented or re-initialized by the applet 30, and the counter 40 includes a memory in which its current count value is stored. The current value of the counter 40 is available to be read by the applet 30...
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