If the EXA device cannot connect to the smart device application via Bluetooth, please check the following:
- The Bluetooth module in your smartphone may go into a state where it does not work properly anymore. From your smart device settings, deactivate Bluetooth and activate it again.
Also, rebooting smart phone may help. - Make sure EXA device is not connected to another application.
The blue LED on EXA should blink when it's not connected to any app.