This is one of the reasons why I love my wifi-equipped 8320. In indoor areas with poor reception like my office, I have the option of tunnelling the GSM traffic through the wifi network instead of the cellular network. This feature (UMA) guarantees that I have solid reception in the places where I spend the most time: home and office. I realize that this is not true for the 8330, but I want to mention this option in case you are in a position to choose a different phone/network in the future.