Turning off the phone connected to the watch will break the connection.
After that, Auto Reconnection will not be triggered by simply turning the phone back on again.

Auto Reconnection will be performed, however, if the conditions below are satisfied.

• If the watch recovers from the Power Saving state and attempts to reconnect.
• If phone that is turned on is close to the watch.

To re-connect manually after turning your phone back on

1.

On the phone's Home Screen, tap the CASIO WATCH+ icon to restart the CASIO WATCH+ app.

2.

Perform the procedure under "To re-connect manually to the last-connected phone".