For awhile, I couldn't figure out how to change the text input mode when sending emails. There was no soft button that gave me the option and I though I had hit every button until finally I tapped the T-zones button. Not intuitive, but it works.
This phone has been a blast to play with. I have a cable coming and am looking forward to setting up some custom wallpaper and ringtones. I also want to get my Palm phone list into the S105's phonebook.