I have a 3Gs and a wireless network consisting of two Airport Express stations, one upstairs (extended), one down (main). The iPhone picks the wifi up downstairs and in most of the house but in the back bedroom where the second Airport is, it can't find it. The signal from downstairs is too weak for it and it's ignoring the extension. My MBP picks up the network no problem wherever I am in the house including the problematic back bedroom. I know it has a greater ability than the phone to pick up networks but I've been through the set up so many times and am sure the network is working as it should. Any clues? It's £80 wasted otherwise as the phone was the reason for the second base station. Thanks.