I have one question which is about 3G network on i7500. I read that i7500 support 3G network but how can i turn it on or off i have a i7500 with t-mobile plans service. Didn't i need to buy a 3G service just like buy internet service?? if i don't need to do that so how can i enable 3G one my phone. I checked the mobile network option and there was not thing about 3G, i just have one op. about only use 2G. Can any one tell me about this?