Originally Posted by bostonnerd
AT&T seems to be very confused over all of these plans. It was really easy prior to the iPhone. You paid for unlimited domestic BES use or unlimited worldwide data roaming. Most BB users were email centric and used the Browser for limited searching and data access. It was easy for AT&T (or any carrier) to model data usage on a per BB basis. I would expect it didn't vary much month to month as email is compressed and a very low bandwidth segement any way.
The Iphones chew data like crazy (I also have a 3Gs on Exchange). Using an iPhone internationally blew the usage models to hell and forced AT&T to allocate roaming based on data buckets. AT&T was getting screwed with Iphone users using unlimited non domestic data, and Iphone users were in rebellion when they saw the obscene roaming charges. A few minutes on Utube can use as much bandwidth as a weeks worth of BB email.
Now the BB is being lumped in with the iPhone for non domestic roaming. As BB users don't consume anywhere near as much data as Iphone users, we are getting the short end of the straw ;)
I definitely understand that.
T-Mobile has international data down pat. Only BlackBerry devices can activate an unlimited international package. If you take your SIM out and put it in a different device, you get charged at the per-kb roaming rate. The way they differentiate BB traffic from others is by APN. Traffic that goes through the blackberry.net APN is not charged, but traffic that goes through epc.tmobile.com is. I have protected myself by disabling TCP/IP, and everything that I use on my BB, including Facebook and Slacker, still work perfectly.