I have a BlackBerry Curve 8900 and it works like a dream -- email, downloads, attachments, calendar, syncing up, speaker phone, etc. all the functions are outstanding. That $30.00 extra on my AT&T bill is a little much though, but I travel a lot, and need to do office stuff off my cell phone, and the BlackBerry has met my every need. The one downside is that I have to recharge to phone every night when I heavily use it. Plus, it doesn't change the time when I go to a different time-zone.