Moved to a new country and tried to get 3G internet on my tab. Have not had any luck even after requesting settings from mobile network provider and installing settings. On N900 I could get it to work without any issues. Any tips?

On a separate but somewhat related issue I have noticed that when I switch on my Tab it seems to manufacture an internet connection from somewhere. This was happening before I put a sim in so is clearly some kind of wireless access. When I switch on the device I receive push email and some facebook status messages and have also received whatsapp messages. But when I search for wireless networks I don't find any. Anyone have any ideas what could be causing this spooky occurence.