Yesterday I had a new experience of voice calls dialing out OK and connecting OK but no voice at either end. I did tests to and from another mobile and landline with the same results. After half an hour of trials I finally switched the phone off and then on again and the problem had resolved itself. I seem to recall that there was a a "strange" icon on the screen above the normal Add, Keypad, Cancel buttons after the phone had connected. I think it looked like a sine wave with a line through it (no modulation???). I could find no such or similar icon in the manual. Has anyone else experienced a similar problem? Thanks for any advice.