A remote management system for a portable electronic device, comprising: a customer care system configured to remotely communicate with at least one portable electronic device, the customer care system being operable to send a diagnostic command corresponding to a command for diagnosing current state of the at least one portable electronic device and to receive performing results of the diagnostic command corresponding to the diagnostic command; and the portable electronic device comprising a first display and an input, the portable electronic device being operable to interpret the received diagnostic command as input by a user, to perform diagnosis according to the diagnostic command, and to display results of the diagnosis on the first display, wherein the portable electronic device further is operable to send the performing results of the diagnostic command including the displayed results to the customer care system; wherein the customer care system comprises a second display configured to display a display window in order to display results which are included in the performing results of the diagnostic command as displayed on the first display of the portable electronic device and an input window in order to visually display the input of the portable electronic device, wherein the diagnostic command is input to the customer care system by a customer care representative manipulating the displayed input window showing the input of the portable electronic device and then communicated to the portable electronic device, wherein the portable electronic device is configured to interpret the diagnostic command as it would have been generated through the input of the portable electronic device. a customer care system configured to remotely communicate with at least one portable electronic device, the customer care system being operable to send a diagnostic command corresponding to a command for diagnosing current state of the at least one portable electronic device and to receive performing results of the diagnostic command corresponding to the diagnostic command; and the portable electronic device comprising a first display and an input, the portable electronic device being operable to interpret the received diagnostic command as input by a user, to perform diagnosis according to the diagnostic command, and to display results of the diagnosis on the first display, wherein the portable electronic device further is operable to send the performing results of the diagnostic command including the displayed results to the customer care system; wherein the customer care system comprises a second display configured to display a display window in order to display results which are included in the performing results of the diagnostic command as displayed on the first display of the portable electronic device and an input window in order to visually display the input of the portable electronic device, wherein the diagnostic command is input to the customer care system by a customer care representative manipulating the displayed input window showing the input of the portable electronic device and then communicated to the portable electronic device, wherein the portable electronic device is configured to interpret the diagnostic command as it would have been generated through the input of the portable electronic device.