ELECTRONIC DEVICE FOR PROVIDING SEARCH FUNCTION AND OPERATING METHOD OF ELECTRONIC DEVICE

An electronic device system, according to an embodiment, comprises a first electronic device, a second electronic device, and a charging case, wherein: the first electronic device comprises a first battery and a first processor; the second electronic device comprises a second battery and a second processor; and the charging case comprises a third battery, a boost circuit that charges the first electronic device and/or the second electronic device with power of the third battery, and a bypass circuit that directly supplies the power of the third battery to the first electronic device and/or the second electronic device. The first processor of the first electronic device may: identify whether the first electronic device and/or the second electronic device are/is mounted on the charging case; in response to identifying that the first electronic device and/or the second electronic device are/is mounted on the charging case, check remaining battery power of the first battery and the second battery and determine the first electronic device having more remaining battery power as a main electronic device; transmit a first request signal to a first external electronic device; in response to the strength of a first response signal received from the first external electronic device, switch to a lost mode for broadcasting the first request signal at a specified period; and transmit information related to the lost mode to the charging case. The second electronic device may switch to a power saving mode in which operations other than specified functions are not performed, and the charging case may connect the third battery to the bypass circuit on the basis of the information related to the lost mode and provide the power of the third battery to the first electronic device by using the bypass circuit. Various other embodiments of the present invention are possible. L'invention porte, selon un mode de réalisation, sur un système de dispositif électronique qui comprend un premier dispositif électronique, un second dispositif électronique et un boîtier de charge, le premier dispositif électronique comprenant une première batterie et un premier processeur ; le second dispositif électronique comprend une deuxième batterie et un second processeur ; et le boîtier de charge comprenant une troisième batterie, un circuit d'amplification qui charge le premier dispositif électronique et/ou le second dispositif électronique avec la puissance de la troisième batterie, et un circuit d