&quot;Yes, but Google Voice is only available in the US.&quot;
It would be more true to say: Google Voice only provisions US phone numbers. I have used my google voice number to make and receive calls and SMS messages from other countries. You CAN use it worldwide, it&#x27;s only TCP&#x2F;IP data after all.
Unfortunately, you can&#x27;t count on MMS working if you send to a non-US carrier. But MMS is only good because of its de facto status, it&#x27;s not the best option for any of its use cases.