The Amiga 32 and the Atari Jaguar were pretty terrible.

I broke my Sony Ericcson on the changing room floor at the gym so my girlfriend lent me her N-Gage which she used for her second line, until I got a new one. It was ok except that it was big, fell over in my pocket all the time, and when you had to talk on it, becasue the mic was end on, I felt like Zack Morris from saved by the bell. I did however finish Virtua Tennis on it with relative ease before I banished it back to my gf's for the rest of its sorry existence. I am now the proud owner of a Siemens SX1. Not that I'm a gadget freak or anything.