i am planning on buying an iphone on nov 9 in UK, and then unlocking it for use with Tmobile. I am using a prepaid card so obviously will not be able to use EDGE, but can i connect to my home wifi network for free? The reason i ask is because o2 has included wifi in their data plans, and i don't see how this works as i should be able to connect to whatever wifi network i want (provided i have sufficient access) and therfore there is no reason for o2 to mention wifi in the data plan?