http://news.bbc.co.uk/2/hi/technology/7833944.stm
One of the reasons I like using Nokias is that when I upgrade the menus stay pretty much the same. Even so there are some useability issues that make me nuts. For example, when you scroll through menus and the address book, the active item is always on the bottom which means that invariably you overshoot the name or feature you’re looking for.
What’s your most frustrating feature on your new phone?

i have the iPhone … hate the fact i can’t use it as a thumb drive, i can’t use it to access documents, unless i eamil them to myself .. let alone edit anything .. toy phone, NOT a smart phone.
Mine has a “silent” setting, yet the only thing that isn’t silent is the reminder ring tone.
The one that means it won’t find itself when I’ve put it down somewhere!
I’m setting up a new Nokia 5310 and one of the things that makes me crazy is, yes, the menus are all in the same place but I can never remember where to go to do which things. Setting it up to recognize the address book for example. Is that under Settings? Messages? Good luck in guessing.