Convenient functional device of cell -phone, cell -phone that has convenient function and interaction system thereof

The utility model provides a convenient functional device of cell -phone, the convenient functional device of cell -phone include the shell and install the chip circuit within the shell, and the chipcircuit includes control chip and peripheral circuit component, and peripheral circuit component includes command input unit, information output unit, radio -frequency identification label and connection interface, control chip is with command input unit, information output unit and be connected the interface and be connected, wherein, the command input unit is used for the control command that isto control chip transmission people, information output unit is used for sending the readable information of computer to external equipment, radio -frequency identification label is for locating theinside or outside RFID label of shell, connect the mainboard communication connection in the interface cell -phone, control chip establishs electric connection through connecting the interface with the mainboard to establish da