A communication apparatus comprising: a selection unit configured to select either of a first mode of a first communication technology or a second mode of the first communication technology, the first communication technology being NFC communication technology, and the first mode being a reader/writer mode for specifying a memory area of a partner apparatus and transmitting data or a card emulation mode, and the second mode being a P2P mode for transmitting data without specifying a memory area of the partner apparatus; a determination unit configured to determine that the partner apparatus is not in a communicable state in the second mode, wherein, in a case where the determination unit determines that the partner apparatus is not in the communicable state in the second mode, the selection unit selects the first mode; a transmission unit configured to transmit a communication parameter used for communication in a second communication technology between the communication apparatus and the partner apparatus to the partner apparatus, using the mode selected by the selection unit, the second communication technology being short-range wireless communication technology having a communication area that is larger than a communication area of the first communication technology, wherein, in a case where the selection unit selects the first mode the transmission unit specifies a predetermined memory area of the partner apparatus and transmits the communication parameter in the first mode; and a short-range wireless communication unit to which the partner apparatus is connectable by the second communication technology based on the transmitted communication parameter. a selection unit configured to select either of a first mode of a first communication technology or a second mode of the first communication technology, the first communication technology being NFC communication technology, and the first mode being a reader/writer mode for specifying a memory area of a partner apparatus and transmitting data or a card emulation mode, and the second mode being a P2P mode for transmitting data without specifying a memory area of the partner apparatus; a determination unit configured to determine that the partner apparatus is not in a communicable state in the second mode, wherein, in a case where the determination unit determines that the partner apparatus is not in the communicable state in the second mode, the selection unit selects the first mode; a transmission unit configured to transmit a communication parameter used for communication in a second communication technology between the communication apparatus and the partner apparatus to the partner apparatus, using the mode selected by the selection unit, the second communication technology being short-range wireless communication technology having a communication area that is larger than a communication area of the first communication technology, wherein, in a case where the selection unit selects the first mode the transmission unit specifies a predetermined memory area of the partner apparatus and transmits the communication parameter in the first mode; and a short-range wireless communication unit to which the partner apparatus is connectable by the second communication technology based on the transmitted communication parameter.