I really am not using my iPhone 3G data plan nearly as much as I thought I would...I use WiFi for almost everything. Out of 2GB last month I only used 16MB of data, I am signed up for the 2GB plan currently and paying $25.00 per month...I just don't need this much data. Is there any way to step down to the 250MB plan without calling AT&T? ie...can you do this on the iPhone or go to the AT&T website and change your plan? Much help would be appreciated. Thanks!!