| 摘要 |
This invention relates to a radiotelephone used for public mobile phone network, more specifically, to a radiotelephone which can be inserted by a plurality of user cards. The invention contains a housing, display, buttons, loudspeaker, microphone, antenna and battery. The internal circuit includes a button circuit, display driving circuit, microprocessor, receiving and transmitting circuit, socket interface, characterized in that the socket interface is connected with a plurality of user sockets, provided with a multi-card selector, and can identify a plurality of users. The advantage of the invention is in that users can take only one mobile phone which carries a plurality of user cards used in different areas. When it is in using, the most economical or the most suitable user card can be selected manually or automatically. When it is out of using, all of the user cards are in the standby state, consume power of a set of mobile phone only, and can receive calling information from individual card at any time. |
