Android P is locking various things down, such as network monitoring and mic/camera recording for background apps. https://developer.android.com/preview/behavi

Android P is locking various things down, such as network monitoring and mic/camera recording for background apps. https://developer.android.com/preview/behavior-changes#input-data-privacy https://developer.android.com/preview/behavior-changes#input... "Android P strengthens privacy by limiting the ability of background apps to access user input and sensor data. If your app is running in the background on a device running Android P, the system applies the following restrictions to your app: - Your app cannot access the microphone or camera. - Sensors that use the continuous reporting mode, such as accelerometers and gyroscopes, don't receive events. - Sensors that use the on-change or one-shot reporting modes don't receive events. If your app needs to detect sensor events on devices running Android P, use a foreground service."