The operation related to smartphone connectivity may become unstable depending on the settings of your smartphone.
Changing the settings may improve or stabilize the operation.

*This page is based on the "CASIO WATCHES" app, but the information regarding smartphone settings is applicable to other CASIO watch apps as well. Please make use of it.
*Changes to the settings may cause your smartphone's battery level to decrease more quickly.
*The settings menu may differ depending on the model and OS version.
*The information in the settings menu on smartphones is as of May 2024.

・Turn on "Allow Background Activity" for the app
　1. Select [Settings] > [Apps] > [App management] > [CASIO WATCHES] > [Battery usage]
　2. Turn on "Allow background activity"

・Turn off "Optimize battery use" for the app
　1. Select [Settings] > [Battery] > [More settings] > [Optimize battery use]
　2. Set the "CASIO WATCHES'' app setting to "Don't optimize".

・Turn on "Auto launch" for the app
　1. Select [Settings] > [Apps] > [Auto launch]
　2. Turn on the "CASIO WATCHES" app settings.

・Turn off "Power saving mode" and "Super power saving mode"
　1. Select [Settings] > [Battery] > [Power saving mode]
　2. Turn off "Power saving mode" and "Super power saving mode".

・Disabling the function to automatically stop app
　1. Launch the "CASIO WATCHES" app.
　2. Select "≡" on the navigation bar at the bottom of the smartphone screen to open the task manager screen.
　　*The icon design of "≡" varies depending on the OS version and settings.
　3. Select “…” at the top right of the “CASIO WATCHES” app. (The "Lock" and "Split screen" menus will be displayed.)
　　*The icon design of "…" varies depending on the OS version and settings.
　4. Select "Lock"

　Once locked, a lock icon will be displayed at the top right of the CASIO WATCHES app screen.
　While this icon is displayed, the app will not be stopped automatically.
　*The lock will be released when you close the app.

・If you restart your smartphone or turn Bluetooth off/on
　Please start CASIO WATCHES once.

*The effects of smartphone settings vary depending on the OS version and manufacturer, so they are not limited to the information listed above.
*The information on the links listed above is for reference only.
  We do not guarantee that the problem with your smartphone will be resolved.
  For details on smartphone settings, please consult your smartphone manufacturer or your carrier.

*OPPO is a trademark or registered trademark of Guangdong OPPO Mobile Telecommunications Corp., Ltd.