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

[DRNewcomb]

Originally Posted by dg7feq

so there must be some T&C that you are not allowed to permanently reside the SIM in roaming.. We have such a carrier here in germany who allowes roaming free calling for up to 30 days in a row, then you have to touch home network again or you will be charged roaming rates...

Yes, there are T&Cs that state it's not for permanent use abroad. They don't seem to have any set criteria for how that is determined. I suggest to T-Mobile customers who are on an extended stay abroad that they occasionally post their SIM back to a friend in the US who will make a local call and then post it back. Not sure if that would do any good, but it couldn't hurt.

Just set a PIN and have a spare SIM handy.