Mobile phone for multiple SIM cards

A mobile phone for multiple SIM cards comprising at least a telephonic apparatus, a battery, and a rear casing for covering said battery and connecting with said telephonic apparatus;

• said mobile phone is characterized by that:
• said rear casing has receiving capacity at least for loading of an electric circuit board, said electric circuit board has a plurality of connectors used for fixing a plurality of SIM cards (subscriber identification modules), said SIM cards each forms a parallelly connected loop connected through a connecting point provided on said electric circuit board;
• additionally, said electric circuit board has thereon a soft bus line to connect an extension card which is inserted in the position where said SIM cards are originally located in said telephonic apparatus, so that the communication loop of said telephonic apparatus is communicated with said electric circuit board by means of said extension card as an interface;
• said electric circuit board is installed thereon a manually moved switch on the contrary side to that loaded with said SIM cards, when said manually moved switch is switched to said loop of one of said SIM cards of any system, the state of combination of said telephonic apparatus is communicated in the close state with the one of said card loops of said system.