| 摘要 |
An object of the present invention is to reduce the power consumed by mobile communication terminal having wireless LAN connection function. To achieve this object, when data communication operation is started, a control unit determines whether connection to wireless LAN is available, and if so, detects the battery remaining amount in battery unit If the battery remaining amount is equal to or greater than a first threshold, data communication is performed through wireless LAN connection. When the battery remaining amount is smaller than the first threshold, screen for recommending connection through cellular communication is displayed on display unit. When the battery remaining amount becomes smaller than a second threshold smaller than the first threshold, power source control unit performs predetermined power saving operation.
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