I'm in Vancouver teaching a course this week and have my BlackBerry along for the ride. In downtown Vancouver, data support for an MTS Blackberry is very spotty. What I mean is that it sucks.
Right now, my data synchronization for e-mail and even BlackBerry messenger is sporatic at best. Data connectivity is for brief periods of time every hour, two hours, or even four hours. Occasionally, disabling my connections and reenabling them will trigger the data to go on again. Removing and reinstalling the battery sometimes triggers it as well.
If I came here often, I'd need to look at a different provider....Or an iPhone.