Electronic device using communication channel generated by electrical connection between electronic device and external electronic device, and method for operating electronic device

A wireless earphone device comprising:

• a first electronic device;
• a second electronic device;
• and
• a third electronic device in which the first electronic device and the second electronic device are inserted,
• wherein the third electronic device comprises:
• a charging circuit configured to transmit power to the first electronic device and the second electronic device, including a first terminal and a second terminal;
• a memory;
• and
• a processor,
• wherein the processor is configured to:
• establish a first communication channel between the first electronic device and the third electronic device, through an electrical connection formed between the first terminal and the first electronic device and a second communication channel between the second electronic device and the third electronic device through an electrical connection formed between the second terminal and the second electronic device,
• receive, from the first electronic device and via the first communication channel, connection information on the first electronic device,
• receive, from the second electronic device and via the second communication channel, connection information on the second electronic device,
• transmit, to the first electronic device and via the first communication channel, the connection information on the second electronic device,
• transmit, to the second electronic device and via the second communication channel, the connection information on the first electronic device,
• detect a first user input on a touch sensor of the first electronic device and a second user input on a touch sensor of the second electronic device, and
• in response that the first user input and the second user input satisfy predetermined condition, transmit, to the first electronic device, a request signal for updating connection information of an external electronic device to be paired with the first electronic device, wherein the predetermined condition includes a condition related to touch input time of the first user input and the second user input,
• wherein the first electronic device is configured to:
• in response to receiving the request signal for updating the connection information of the external electronic device to be paired with the first electronic device, determine whether the connection information of the external electronic device to be paired with the first electronic device is different from the connection information of the second electronic device, and
• update the connection information of the external electronic device to the connection information of the second electronic device based on the determination that the connection information of the external electronic device is different from the connection information of the second electronic device.