1. US 2. ATT 3. $0 for SIM card since left over from a phone I don't use. 4. $20/month is my delta. $10 for the number on a "Family Plan" and $10 for unlimited data "non-smartphone". I also get texts free since my family is already on unlimited shared text messages (I have a teenager on the plan). 5. $0/MB - see #4 6. ATT is switching from Family Plans to "Shared Data" plans. I don't know the difference, but if the Shared Data plan makes sense for you anyway, then it could be even better. Basically, the way this works is to be on the Family/Shared Data/Shared Text plan anyway. Then simply add a phone line for $10/month and get a free cheap-o phone, which you don't use. For Family Plan pay $10 for unlimited data. For Shared Data, I don't know what the increment is. Put the SIM in your OVMS. Note that the GoPhone plans were better, but for $20/month I have no hassles and should be grandfathered in for at least another year. - Bennett