How can I be on my phone, with FULL 3G service, the internet is flying, then all of a sudden it switches to full EDGE service. How? Shouldn't if I was getting a weaker signal for some odd reason if I moved my phone 4 inches, at least the 3G signal would get weaker? I have to go into Settings, uncheck and then check 3G to get it back to full service for 3G but then it'll just change back to Edge after a few minutes. How is it all or nothing? I'm not even moving I'm sitting here at my desk at work and my phone is in the same spot when it is getting full 3G as with full Edge.