Italy and T-Mobile International unlimited data plan

Hello everyone. I will be traveling tomorrow to Italy and I have the 19.99 Tmobile International unlimited data. I have been searching but I am not really gettting a clear answer. If I use my MSN IM or Google maps, does it come off this plan or additional charge? In theory all is data coming and going from the device so how do they differenciate? One thing I was told that if I use the Blackberry browser instead of any other browser on the device, it will come off this plan. Is it true? So I am a bit confused. Any help or info greatly appreciated. Thanks again

Anyone out there have any ideas? I leave tomorrow... Thanks

Enjoy your visit with the knowledge, any time you have a Wifi and UMA connection, you will have full access to your plan at no additional cost.

However, if you roam out of range, you will incure additional charges.

You have three Browser options. Internet, Hotspot or WAP.

Normaly, you will use the Internet Browser and it will use your UMA connection to BIS. In some circumstances, you may prefer to bypass BIS and use the HotSpot Brower. Neither will incure additional charges on your unlimited data plan.

http://forums.crackberry.com/f3/why-...et-wifi-85060/