A control method of a communication terminal (102) that has near-field communication means (123) includes setting whether or not to enable wireless communication functions by the near-field communication means (123), as operation settings of the communication terminal (102) and controlling to display a predetermined notification before displaying a screen for performing the login request, upon condition that a user operation to transition to a screen for performing a login request to an external device (101) has been received, and that settings have not been made in the setting of the communication terminal (102) at least to enable wireless communication functions by the near-field communication means (123) as operation settings of the communication terminal (102).