Due to Android restrictions, our apps are limited in how they can run in the background. For incoming calls, we first have to send a message to wake up the app. If the app wakes up and responds in time, we forward the call to the app. These messages are processed by a new middleware component.
Please note that an app responds slower than a desk phone. If your colleague answers quickly, your app might still ring once.
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The problem is not solved yet
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