Check and follow these steps to troubleshoot the issue first:
- Verify the version and model of your smartphone. The REON POCKET app is compatible with iOS 16 or later and Android 9.0 or later.
- Make sure that your smartphone's Bluetooth function is turned on.
Note: If you're using Android, open Settings, select the REON POCKET app, and ensure that Location Services are activated. Location services must be enabled due to OS requirements for Bluetooth connections. - After turning the power on, press and hold the [SMART] button on the device for two seconds.
- With the device and smartphone close to each other, start the REON POCKET app and try to connect.
If the problem persists after performing steps 2 through 4 above, try the following procedures:
- Uninstall the REON POCKET app and install the latest version of the app from the app store again.
- Turn off your smartphone's Bluetooth function and then turn it on again.
- After turning the power on, press and hold the [SMART] button on the device for 5 seconds, and then connect.
Note: LED blinks blue repeatedly at 0.5 second intervals. - Open the app and try to connect.
If you completed all the steps and the issue is not resolved, please  Contact the Product Support team  for further support.