The whole "no keyboard" thing---
I can't type on a real qwerty keyboard to save my life on a phone, the keys are just too small.
The iPhone, I can't do it as easily without thinking about it... which doesn't work when texting when you aren't supposed to be (in class, driving...)
my old pearl I liked, but like the iPhone, it won't let you cuss in a text. I can't tell you many people think im "ducking" insane