Mobile 2FA & 2SV without SMS
apple macbook and apple iphone messaging apparently
if you have a MacBook and an iPhone, you can send SMS messages to other mobile devices, too — right from your MacBook.
You may now pay the same fixed price (typ 80p/min) on all roaming networks but the features you can access will vary ! For example if you use a UK three mobile in Turkey you'll only get Planet3 if you choose Turkcell.
Google Calendar SMS alerts