Originally Posted by DallasFlier
Umm, read it again...
No, a PIN can only be registered with one BIS service at a time. You would have to de-register with one before registering with the other. There's a chance that registering with the new one would de-register, not sure. But you'll have to register with t-mobile and resend all service books, and then do the same thing with your original carrier when you go back - at an absolute minimum.
Ok, let’s say it doesn’t do it automatically, how do I de-register and register manually?
Is there any chance when I come back home that I might have troubles going back to my regular provider?
Thank you for your answers....