My cell phone reception at home was terrible. Many dropouts, all the time. Oddly, it had been great, now it wasn’t. I called Cingular. They said, turn it off then on, 2-3 times a day. This will make it refresh and then find the strongest signals.
So it did. No more dropouts. (Sue, who has the same model phone as me, never had the problem, because she often turns her cell phone off anyway – behavior I, being a seriously Type-A personality, found baffling.)