I have a pre-paid account and am using a "Samsung Smooth" cell phone (and I don't see a message board for this particular model).
When retrieving voice-mail, the touch tone dialing functions cease to work after having listened to the first message. To put it another way; once having entered my password, and played/listened to my first voice-mail message, I'm given some options - primarily: "To delete this message, press 7; to save it in the archives, press 9; to hear more options..."). If I press any number key (7, 9, 0...) it is not recognized - after a few seconds I hear; "Are you still there?". I continue to dial numbers (all the while I hear the beep as I press each/any number)... After a few attempts I hear "Sorry you're having problems; please try again later."
In attempting to have these tone signals recognized, I've change the "DTMF Tones" setting from 'Normal' to 'Long'. [This menu option is found at: Settings&Tools>Call Settings>DTMF Tones>LONG (vs. normal)]
This issue only became apparent in the last few days - I'd not had this problem in the past. Does anyone have a solution?