My Android DUMB phone ran up a metered data bill of $30 in one month just updating itself over 3G, rather than doing it for free over my wifi connection. :rant: And here I thought I had no data plan at all! (T-mobile added it surreptitiously.) I can just imagine what my bill would have been had I actually attempted to watch any video during that month.
Similar experience with a Nokia many years ago with AT&T.