FOLDABLE ELECTRONIC APPARATUS AND METHOD FOR SUPPLYING ELECTRICAL POWER TO EXTERNAL ELECTRONIC APPARATUS BY USING FOLDABLE ELECTRONIC APPARATUS

Disclosed is an electronic apparatus having a folded state and an unfolded state. The electronic apparatus can be set to: use a sensor module to check whether the electronic apparatus is in the unfolded state; use the sensor module to check whether a first surface, which is concealed in the folded state and externally visible in the unfolded state, is lying on an external ground surface; check, in response to the electronic apparatus being in the unfolded state and the first surface lying on the external ground surface, whether the external electronic apparatus is present on a charging unit; turn on a screen of a sub display, which is facing in the opposite direction as the first surface, in response to the external electronic apparatus being present on the charging unit; use the charging unit to wirelessly supply electrical power to the external electronic apparatus; and keep the screen of the sub display on while electrical power is being supplied to the external electronic apparatus.