This link provided an explanation of the "bands" on wireless phones. Truthfully, as an ATT customer, this concept is foreign to me. It wasn't until I started service with Verizon that it even became a necessary discussion item. I am curious how this idea of "bands" was developed. If the link's explanation is true then I am really confused about it. If the B-Band is the local Bell's Wireless subsid, then in my area, that is Pacific Bell and they operate a GSM network. Yet Verizon (CDMA) instructed me to keep my phone on the B-Band. A logical/factual explanation would be appreciated.