Not disabled, removed. One thing that really irritates me about new phones is removing (or not) all the manufacturer's crap that comes with a new one - my current Sony has dozens of default applications I don't use, don't want to use, and don't want to fill up the memory with - but which I can't remove and which Sony spend one day a week updating.
All a phone *needs* is a basic dialler, text messager, and possibly a browser - and a way to access the application store. Let the user decide what he wants on it, rather than filling it with crap he'll never use. Yes, I'm quite aware that my needs are not the same as those of a fifteen year old, but that's rather the point, isn't it? Let *me* put on the phone those things I need, not sell me something, half the memory of which is full of unremovable cruft. (One of the things I really don't need or want is voice input - maybe I'm too old...)