My Wi-Fi used to work perfectly, but the last few days things have stopped working. I am able to select my wireless network (via Apple Airport), and the Wi-Fi menu has a check mark next to my network name, but the Wi-Fi signal does not replace the Edge logo at the top of the screen. It's not just a visual problem - my phone is not connected to a wi-fi network, even though it says it is. It's not my network either. There is an open wi-fi network within range and I can also select it, but I cannot get an actual signal. Along with the issue above, when I go back to my Wi-Fi settings, sometimes Wi-Fi is turned off -- even though it was on about 1 minute ago. Other times I go to the Wi-Fi menu and it says it is on, but there isn't a list of networks to choose from (there are about 10 within range). I did a software restore this morning, which didn't help. I bought my phone on release day from the ATT store. I probably need to call Apple though? I am not going to be happy if they tell me they can exchange it for a refurbished phone.