No idea... WinMo 6.1 just threads them all for me, but I know I don't have 900.
EDIT:
Originally posted by: Linflas
This. Phones are for talking, keyboards on computers are for typing.
I don't necessarily agree with this, but that's probably obvious since I mentioned WinMo 6.1 above which means I have a smartphone and you'd have to be silly to buy one if you only wanted it for phone stuff

. But yeah, most of the time, I don't need a full on vocal conversation to get what I need... a text can be simple and answered at their leisure. If I need an answer as soon as possible, then I will call instead.