I have recently noticed that there is a blaring misconception for the iPhone 3g and it's reception of AT&'T's service. Now, I am not sure if most of the users here at macrumors know this, and if you do, I apologize; but I just want to set the record straight and stomp out some rumors I have heard in reviews. In many youtube videos and reviews of the iPhone 3g I keep hearing that when the phone is in 3G mode the signal sometimes decreases when compared to EDGE signal strength in the same area. Many have speculated that the iPhone may somehow drain signal strength but this is not the case. For the many of you who may not know this, EDGE and 3G services are broadcast from two completely different devices. Since 3G is relatively expensive for AT&T to install it is common for them to skip cellular towers that broadcast EDGE if it is close enough to another tower which already has the 3g signal being broadcast from it. This is because since they are behind the 8-ball with 3g data coverage when compared to other cellular service providers, they are trying to expand their borders faster by sometimes skipping towers in such fashion instead of concentrating on the signal strength in said areas. As a result, we sometimes find that areas where EDGE may have 5 bars, 3g may only provide 2 or 3 bars of cellular coverage. Eventually these issues will be reconciled as AT&T will go back and fill in these spots to increase signal strength supporting their "More bars in more places" slogan. I hope I have answered some people's questions about this peculiarity, and if you already knew this then again, I apologize. Let me know if you have any other questions or concerns that I may be able to address.