A communication device may monitor an establishment of a first type of communication link between a communication device and an external device while the communication device is in a first state in which a P2P mode of an NFC standard is active and a first mode of the NFC standard is active. The communication device may send first data to the external device by using the first type of communication link. The first data may include a command for causing the external device to execute an activation of a particular application. The communication device may change the state of the communication device from the first state to a second state in which the P2P mode is active, and perform the two-way communication with the external device that operates the particular application by using a second type of communication link.