This often happens when I'm travelling internationally. If I plan on buying a local sim card instead of purchasing a roaming plan - I might not have access to my SMS until I get back home.
Get a next gen phone; They should all do Wifi Calling now. This causes your phone to tunnel the cellular via internet link, and you get full call and sms coverage.
Of course, 2FA via SMS is a bad and deprecated pattern and needs to die! But! you can get your phone overseas without roaming which is pretty neat.
