ok, this may be a weird question, but ... i just upgraded from my voice only plan to the new iphone 4 with a 200 mb monthly plan. i activated it yesterday (july 29), and my billing period ends (aug 2). when my online account which shows i've used 1mb of my 200mb so far, but with a footnote that says "rate will be prorated," does that mean i will get into the "overage" range if i use ~ 4-5/30 of my 200 mb? ie, ~27 mb? i doubt in general i'll go over 200mb on a given month, but given this will be my first week using the iphone, it's easy to conceive my usage will be a bit heavier during the first week. any thoughts/ experiences with this? thanks!