I have an original iPhone with the 3.0 OS. I am planning to upgrade to the 3GS model soon, but... Today, I had the opportunity to compare my reception to that of a 3G iPhone at my office, and my iPhone had the E sign and one bar where the 3G iPhone had No Signal. Obviously, it would be a bad move to "upgrade" from a phone that has marginal reception- but I can text from my office intermittently- to one with no reception. Anyone have any similar experience? Advice? Thanks in advance.