Newb here who is totally enthralled with my new IPhone 4. That being said, I had a ridiculously cheap plan at Sprint at 43.xx month with unlimited data. I’m really worried about going over my 200mb a month limit. Any tips to prevent unintentional data usage? The “phantom data” threads got me paranoid.  I was also wondering how folks on the phantom data thread are finding detailed recording of their data usage? I can only find totals on my phone. They have listings of times, etc. Is this an app or somewhere on my phone and I can’t find it?  How do I verify that my phone is utilizing my home wifi connection? It says “on” under wi-fi networks and my network is checked under “choose a network”…so I’m assuming I’m good? If I’m out and about, will the phone pick up random wifi networks? How would I prevent that?  Hate to be a pain, but I didn’t need to worry about my data usage with Sprint so i’m a little nervous.  TIA,