Occasionally I’ve been asked which phones I believe they have the best usability. I’ve tried over 30 phones in my time as a reviewer in the past 3 years, so here’s my opinion on what’s intuitive:
Sony Ericsson’s non-smartphone OS tops the list, with Series60 from Nokia being close. Everything else in that market is mediocre IMO. In the touchscreen market, iPhone kicks everyone’s ass. PalmOS and Windows Mobile can kinda compete because they have been in the market longer than anyone else so they have fixed some mistakes over the years, but overall, Apple got it right, right off the bat. The funny thing is, that I consider UIQ having the worst usability of all touchscreen systems I ever tried (even worse than some half-baked Linux systems I’ve seen out there). Sony Ericsson bought UIQ this past year. And they went from having the best smartkey OS, to the worst touchscreen OS. Nice going SE.