iPhone 6s+ running 9.3.4 At night when I sleep I plug in my iPhone and run the "White Noise" app. Every night of the week the app runs all night with no problems except Wednesday nights. On Thursday mornings I wake up and the "White Noise" sound is not playing. Is there a certain "restart" or "maintenance" restart that the iPhone does once a week in the middle of the night on Wednesdays? Or is it perhaps something with the app? I've checked all the settings on the app and I see no issues there. Perhaps there's another explanation. Thanks.