A communication apparatus includes a wireless module configured to execute communication with a communication terminal; a host system including a communication controller configured to control the communication with the communication terminal executed by the wireless module; an updater configured to update information used for the communication, at predetermined updating timings; and an operation status controller configured to control an operation state. The communication apparatus further includes a sub-system configured to send, to the operation status controller, a report indicating that an updating time period has elapsed from the updating timing of the information. The operation status controller causes the host system to return to a regular mode, upon receiving the report indicating that the updating time period has elapsed while the host system is in an energy saving mode.