An electronic device comprising: a transceiver including a first transmission module, a first reception module and a second transmission module; and a processor, wherein the processor is configured to: measure a first transmission power of the first transmission module, received through the first reception module, calculate a first difference value between a first target transmission power and the first transmission power of the first transmission module, characterized in that the processor is further configured to: determine a state of the first transmission module, based on the first difference value, and turn off a transmission operation of the first transmission module and activate a transmission operation of the second transmission module in accordance with the determination that the state of the first transmission module is abnormal when a difference between the first target transmission power and the first transmission power is greater than a configured reference value. a transceiver including a first transmission module, a first reception module and a second transmission module; and a processor, wherein the processor is configured to: measure a first transmission power of the first transmission module, received through the first reception module, calculate a first difference value between a first target transmission power and the first transmission power of the first transmission module, characterized in that the processor is further configured to: determine a state of the first transmission module, based on the first difference value, and turn off a transmission operation of the first transmission module and activate a transmission operation of the second transmission module in accordance with the determination that the state of the first transmission module is abnormal when a difference between the first target transmission power and the first transmission power is greater than a configured reference value. measure a first transmission power of the first transmission module, received through the first reception module, calculate a first difference value between a first target transmission power and the first transmission power of the first transmission module, characterized in that the processor is further configured to: determine a state of the first transmission module, based on the first difference value, and turn off a transmission operation of the first transmission module and activate a transmission operation of the second transmission module in accordance with the determination that the state of the first transmission module is abnormal when a difference between the first target transmission power and the first transmission power is greater than a configured reference value. determine a state of the first transmission module, based on the first difference value, and turn off a transmission operation of the first transmission module and activate a transmission operation of the second transmission module in accordance with the determination that the state of the first transmission module is abnormal when a difference between the first target transmission power and the first transmission power is greater than a configured reference value.