Could T-Mobile (U.S.) new global plan doom the global SIM card business?

[DRNewcomb]

Originally Posted by dg7feq

so that means you should send it home and use it in USA for a while earlier than 6 months?

I don't know. It may mean that after a total of 6 months (e.g. 182 days) they cut it off. The only complaints that I've heard have been from people who used the SIM continuously for over 6 months. It may be that the system tolerates more cumulative time roaming in smaller doses. (A month in the US, two months abroad, repeat.)