Trouble with WWan card

[Rad57]

[b[/b]I bought tablet (1838 25 U) and Gobi 3000 Broadband card trough Amazon site. Installed card with no problem, but everything else is nightmare. I am often in USA, Canada and Europe and I hopped that will work anywhere but it doesn't. Card came with At&T SIM card, when I tried to put SIM card from BELL Canada, it did not work. The funny part is wit technical support from Lenovo. I called them and seems that they do not have a clue why this is happening. Even one of them told me that card is not working outside of USA. What a nonsense!. It looks like the card is locked with USA providers, Verizon AT&T and Sprint, and they are listed when you go to Mobile networks setting. Does anybody has a similar experience and how to resolve it?