Randomly throughout the day, at least 3 times, my phone will make a strange high pitch sighing tone. Its not my notification tone, or even one on the list of notification sounds. When ever I hear it I immediately check my notifications, but there is none! It usually plays at a higher volume than my notification would be at, even when set to vibrate or silent. Does this happen to any your phones? Its a little distracting to others at work, haha. Thanks!
