My Windows Mobile devices used to take it one step further and sometimes crash when you tried to answer a call. Assuming that you hadn't flattened the battery playing pocket-doom or reading e-books. That was about the time that I started carrying a basic phone, just for calls and SMS.

I like the idea of converged devices, but I like the idea of a simple, small, reliable phone too. That's the major benefit of the original phone system - it takes an awful lot to take it out of commission.