Device and method for identifying status of external electronic device

An electronic device comprising:

• an antenna configured to receive wireless signals outputted from a first antenna and a second antenna included in an external electronic device;
• a communication circuit electrically connected to the antenna;
• and
• a control circuit,
• wherein the control circuit is configured to:
• control the external electronic device wherein the external electronic device outputs specified wireless signals at a first specified phase by using the first antenna and at a second specified phase by using the second antenna,
• receive the specified wireless signals by using the antenna,
• identify a signal intensity corresponding to the specified wireless signals by using the communication circuit, and
• determine a status related to the external electronic device at least on the basis of a difference value between the specified signal intensity and a reference signal intensity,
• wherein the external electronic device comprises a plurality of phase shifters connected to the first antenna and the second antenna, and
• wherein the control circuit is configured to delay phases of the first antenna and the second antenna by a number of times corresponding to a number of the plurality of phase shifters.