This has been my long-term beef with all "smart phones" that have physical keyboards. The process of logging in to any system with a reasonably secure password is a nightmare.

Aside from the issue of not being able to "see" the entirety of a WEP key while I'm typing it (discussed in an old thread), logging in to a resource with a password on the iPhone is a breeze. Sure you have to toggle between a numbers screen, a symbols screen, and the alphabet, but at least you can SEE which of those character groups you're currently using and clearly see which character you're hitting. With most of the physical-keyboard smart phones, you've got no idea at any moment if you're in shift mode or function mode or whatever, and even if you did, whether or not that current mode is going to produce the desired special character.