> "The SIM card is your phone number" It used to be a useful statement, but the US (and many other countries) now have phone number portability, and other stuf

> "The SIM card is your phone number" It used to be a useful statement, but the US (and many other countries) now have phone number portability, and other stuff. I've changed my SIM to _stay_ with the same number from a different carrier in the past, after porting.