An apparatus for supplying power to a mobile phone by utilizing an external power
source when a battery of the mobile phone has been exhausted. In a mobile phone
having an earphone-microphone connector which can be connected with an earphone-microphone
set, the earphone-microphone connector has additional contacts through which external
power can be supplied to the mobile phone from an external power source, especially
from another mobile phone. Therefore, even when the battery of the mobile phone
has been exhausted, a user can make communication through the mobile phone by utilizing
external electric power in a simple and easy manner, without largely changing the
existing construction of the mobile phone.