| 摘要 |
PROBLEM TO BE SOLVED: To establish an optimal utilization situation in accordance with the lifestyle of a user. SOLUTION: One mobile phone comprises two telephone line units 24, 26 and for each of the telephone line units 24, 26, priorities are set in advance so as to easily selectively use the telephone line units in accordance with the lifestyle of the user (e.g., for public use/private use), the telephone line unit 24 or 26 is designated to an address stored in a common memory 50, or telephone lines are manually switched. In addition, a convenient system such as automatically switching a preferential telephone line unit 24, 26 in accordance with a timer is established. The charges of the telephone line units 24, 26 are demanded to different destinations, thereby avoiding confusion of public and private uses in particular. COPYRIGHT: (C)2007,JPO&INPIT
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