A few days ago, my phone would have incessant chiming alerts and I've gone through all of my apps and I can't find the source. Deleted or stopped all notifications and it STILL is driving me crazy. I swear I want to drop it in water. I don't have Yahoo installed on it. I've literally gone through all of my apps...the ones I use and the ones pre-installed on the phone and it still chimes. I'm on the phone...it chimes, on FB it chimes, reading email it chimes....no other alerts, flashing, etc.