I had to cancel my data plan (long story) but in the process have been playing with the BB... Here is what I have discovered thus far... I know this might be old knowledge to many but figured I'd start a thread incase others are interested
I can connect to UMA / Wi-Fi with no issues.... I had T-Mo add what is called a BlackBerry Feature Enabler (see this thread: Blackberry Feature Enabler - UMA
1. BBMessenger does not work even via Wi-Fi (you will need a data plan)
2. BBWeather will not connect and update via the Wi-Fi connection
3. PDSports will connect and update via the Wi-Fi connection
4. Beyond411 will connect and search via the Wi-Fi connection
5. I can surf the net using the Wi-Fi browser as long as I am connectd to Wi-Fi
That is all I have discovered thus far....