FOMA cells phones are the most advanced and stylish cell phones out there. You can view info on them on the Symbian OS site: FOMA phones
For instance, they even have one that has two speakers for stereo sound and the phone is no bigger than an average cell phone. But, they are only available in Japan. They are in high demand by the cell phone ethusiset liveing in US and Europe. But as far as I have found no one has been able to unlock them.