An electronic device comprising: a first antenna (3 51); a second antenna; a first radio frequency front end, RFEE, electrically connected to the first antenna and configured to pre-process an RF signal having a frequency belonging to a first frequency band; a second RFFE connected to the second antenna and configured to pre-process an RF signal having a frequency belonging to a second frequency band different from the first frequency band; a third RFFE and a fourth RFFE configured to process a third RF signal within a third frequency band different from the first frequency band and the second frequency band; a first switch configured to selectively connect the third RFFE to the first antenna and a second switch configured to selectively connect the fourth RFFE to the second antenna, a communication processor electrically connected to the first RFFE, the second RFFE, the third RFFE, the fourth RFFE, the first switch and the second switch; and a memory operatively coupled to the communication processor and configured to store performance information having, at least, a first value indicating an efficiency of the first antenna when performing a first radio communication, and a second value indicating an efficiency of the second antenna when performing the first radio communication, wherein the memory is configured to store instructions that, when executed, cause the communication processor to: transmit or receive a signal within at least one of the first frequency band, the second frequency band or the third frequency band, and select an antenna to support the first radio communication among the first antenna and the second antenna based on the performance information having the first value or the second value, wherein the third RFFE and the fourth RFFE support the first radio communication within the third frequency band. a first antenna (3 51); a second antenna; a first radio frequency front end, RFEE, electrically connected to the first antenna and configured to pre-process an RF signal having a frequency belonging to a first frequency band; a second RFFE connected to the second antenna and configured to pre-process an RF signal having a frequency belonging to a second frequency band different from the first frequency band; a third RFFE and a fourth RFFE configured to process a third RF signal within a third frequency band different from the first frequency band and the second frequency band; a first switch configured to selectively connect the third RFFE to the first antenna and a second switch configured to selectively connect the fourth RFFE to the second antenna, a communication processor electrically connected to the first RFFE, the second RFFE, the third RFFE, the fourth RFFE, the first switch and the second switch; and a memory operatively coupled to the communication processor and configured to store performance information having, at least, a first value indicating an efficiency of the first antenna when performing a first radio communication, and a second value indicating an efficiency of the second antenna when performing the first radio communication, wherein the memory is configured to store instructions that, when executed, cause the communication processor to: transmit or receive a signal within at least one of the first frequency band, the second frequency band or the third frequency band, and select an antenna to support the first radio communication among the first antenna and the second antenna based on the performance information having the first value or the second value, wherein the third RFFE and the fourth RFFE support the first radio communication within the third frequency band. transmit or receive a signal within at least one of the first frequency band, the second frequency band or the third frequency band, and select an antenna to support the first radio communication among the first antenna and the second antenna based on the performance information having the first value or the second value, wherein the third RFFE and the fourth RFFE support the first radio communication within the third frequency band.