N900 Data Connection
 

I am on 02, and noticed a thread about testing the connection speed (mine was something pitiful like 0.2 d/l) so wanted to check something....

My N900 connects via GPRS as its 'data connection' - is this correct? Should it be connecting via some other protocol? I have what 02 say is unlimited data on my plan, but we all know it isnt technically unlimited.

Sorry for the noob question, but figured I may as well query the experts :)