Title:
MOBILE TELEPHONE SIM CARDS SWITCHING AND SELECTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2001/080531
Kind Code:
A1
Abstract:
A mobile telephone SIM cards switching and selecting device is disclosed. The device includes a control circuit module which is mounted on a battery back cover or inside any other space that can accommodate it in a form of circuit board, a soft drop-out line and a common circuit board, the front end of which could be inserted into the SIM card slot of the mobile telephone. Assembling said components, inserting the common circuit board into the SIM card slot of the mobile telephone, the mobile telephone will possess several groups of identification numbers at the same time, and could select any group of SIM card to communicate by the control keys of the mobile telephone.
Inventors:
WEN ZONGYONG (CN)
Application Number:
PCT/CN2000/000088
Publication Date:
October 25, 2001
Filing Date:
April 13, 2000
Export Citation:
Assignee:
QUE ZHIAN (CN)
WEN ZONGYONG (CN)
WEN ZONGYONG (CN)
International Classes:
H04B1/3816; H04Q7/32; (IPC1-7): H04M1/02; H04Q7/32
Domestic Patent References:
| WO1999027731A1 | 1999-06-03 |
Foreign References:
| JPH1125240A | 1999-01-29 | |||
| EP0586081A1 | 1994-03-09 | |||
| US4734928A | 1988-03-29 |
Attorney, Agent or Firm:
CHINA SCIENCES PATENT & TRADEMARK AGENT LIMITED (Zhongke Building 80 Haidian Roa, Haidian District Beijing 0, CN)
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