A communication apparatus includes a wireless communication unit which makes a wireless communication with a wireless apparatus, and is configured to read out data from a memory included in the wireless communication unit when electric power is not supplied from a power supply to the wireless communication unit. The communication apparatus specifies storage target data to be stored in the memory from those managed by the communication apparatus. The communication apparatus then saves the specified storage target data in the memory. The communication apparatus reads out data, which is saved in the memory, by the wireless communication unit in a state in which electric power is not supplied from the power supply to the wireless communication unit, and outputs the readout data to the wireless apparatus.