Okay, so my husband and I have the same phone. We're on the same network, same location (right now, anyway) and same settings (2.2). I have a mobile connection with no problems, but he does not. He can connect to the internet using my Desire as a hotspot (tried it this morning), but the minute I try to connect using the mobile network, nothing. It sits at "Trying to connect.." before changing to "Use phone for data connection when Wi-Fi is unavaliable". The box is checked for the mobile network. What is going on?