The most expensive cell phone I have ever owned, and the worst cell phone I have ever owned. Yes, I know it is a PDA, but I had thought that of all the functions, the easiest to get right would be the tech piece that is the most mature.Reception is routinely poor, regardless of the number of "bars" indicated. The phone has to be reset frequently, usually doesn't ring when there is an incoming call, often drops calls (again, even with a good signal).I have no third party applications running, the latest firmware (had high hopes for the last version; no improvement) and a new SIM tray with a ridge built in to ensure good contact. Still have the same problems.Lastly (and this is entirelly a matter of personal preference), if you have great expectations for internet access, you might want to try it out first. Slow doesn't begin to describe it, even for PDA friendly sites (Cingular's included).Although I really want to like the phone due to the fact that the potential is ideal for my business needs, it is becoming too problematic to deal with.One Note though: Some nice person has mentioned about some Cingular SIMS perhaps working better than others. I will give that a try...but for the money, I shouldn't really have to.