I configured the application to support backgroud bluetooth-central mode, the application connects to the re-file and subscribes to one of its values.
The application works fine in the background, but after I got or made a phone call, the peripheral disconnect, but the application is still always in the background.
I do not perform any long-term actions in the background, but I manage to start the scan after disconnecting the peripherals.
I think maybe the phone ringtone is more powerful than Bluetooth, so it bothers him.
Does anyone know the real cause of the problem? Any suggestions!
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