I've had a San Francisco phone from Orange for a few weeks now and have been using it to access the Internet with wifi networks. But how do I set it up to use my mobile network provider's internet? I spoke to them and they said there should be something under Mobile Network Settings called "Access Point Name". This is what the instruction manual says as well. But the item simply isn't there. Maybe this is because I went through the procedure to remove the Orange software and revert to factory settings when I bought the phone. Any advice?