I am having an issue with notifications through ESPN Scorecenter between my iPhone 4 using OS 5 and my old iPhone 3G using OS 4 that I gave to a friend of mine to use. I setup alerts for certain teams scores, and I get the notifications - but so does my friend using my old iPhone, even when not selecting the same teams. I've tried doing the reset -> Reset All Settings but that didn't work. Do we need to do "erase all content and settings" on the old phone? I want to fix the issue, but not have the person loose their contact information.