To provide an image pickup device with a communication function that can easily be handled, and to provide its control method and a storage medium.

A camera 102 is provided with a control circuit 105 that controls both a communication circuit 103 and a control circuit 125 at the same time when a media card 101 is connected to the camera 102. The media card 101 is provided with a nonvolatile memory 104 for storing image data photographed by the camera 102, the communication circuit 103 that externally transfers the image data photographed by the camera 102 and the control circuit 125 that controls the communication circuit 103.