There may be something wrong in Settings, but I can't find the problem. The Talking Calendar Lite by Kashzift Studio app worked for about 60 days then it went silent. I deleted the app and reloaded it five times. It still rings a chime at each assigned notification (30 min. before, 1 hour before, etc.) but it doesn't speak. For me, the momentary chimes are too quiet and too brief, even though I turned up all the volumes. TY for pointers.