Hi all, I'm new to the smartphone world...please be gentle! I have 1GB data usage. I understand that when I am connected to wifi the data used doesn't count towards my 1G on my phone plan for my iPhone 4. However can someone explain to me - in 3G (if I am away from a wifi connection) how do I know if my phone is using data? The '3G' symbol is almost constantly on, but does that indicate that data is being downloaded? I've noticed times when the 3G turns blue or the loading symbol shows next to it, is this indication of data usage? I have set most of my apps, mail, etc to only update manually etc but I just need to know that I am not downloading data needlessly. Any help would be appreciated.