Electronic device and method of registering external device using device information

An electronic device according to various embodiments includes: a display; a communication module; a memory; and a processor operably connected to the display, the communication module, and the memory. The processor may: establish a communication connection with a server by using the communication module, and receive external device information; displaying, on the display, a graphical object indicating an external device corresponding to the received external device information; providing a configuration UI via which configuration information of the external device can be changed based on a user input to the graphic object; storing the configuration information of the external device changed based on the user input to the configuration UI; searching an external device and obtaining a plurality of pieces of device information; selecting a device corresponding to the external device information among the plurality of pieces of device information, and establishing a communication connection; and transmitting the