Patent ID: 8036708

Claim:
A mobile communication terminal, comprising: a detecting means for detecting an inserted state of a card; a judge means for determining presence or absence of removal or replacement of the card in response to detection by the detecting means; and a control means for making the terminal continue a normal operation if the judge means determines that neither the removal nor the replacement is present, wherein the judge means: determines presence or absence of removal of the card on the basis of presence or absence of a response signal from the card, repeatedly conducts an operation, in which power to the card is turned off, power is turned on again, reset processing is executed, and then presence or absence of the response signal is confirmed again, for a fixed period of time until the response signal is present, when a response signal from the card is absent, and determines that the removal of the card is present when the fixed period of time is passed over without the response signal from the card.