"The device is already connected to a smartphone." is displayed on the camera, and it cannot connect to Creators' App.
If [The device is already connected to a smartphone. To connect to another, disconnect Bluetooth and Wi-Fi from the currently connected smartphone.] is displayed on the camera when attempting to connect the camera to Creators' App, the connection to Creators' App is not succeeding because the camera's connection information remains in Imaging Edge Mobile. Update Imaging Edge Mobile to Ver. 7.7.2 or later. (After the update, the icon changes to .) After completing the update, follow the instructions in "If you did not set up a connection initially," and start connecting from the camera's menu.