I live in the US and I was wondering if anyone else has bought the Motorola Razr V3x and used their Att SIM card with it? I was thinking of buying the Razr V3x but I heard a few stories of people getting the phone (which was originally for use only in Europe) and having problems with it when using it here in the US as an UNLOCKED phone. I didn't want to buy it and then find out it doesn't work. Help!?