All this SMS stuff sounds like complete nonsense in most of Europe. SMSs were always priced individually like unicorn's blood when they're barely thin air for carriers and the next best thing you had was BBM which I remember having a Blackberry being almost mandatory for all the young deaf people I knew due to it. When whatsapp went multiplatform and started working even on dumbphones just needing a very cheap data plan everyone flocked to it and never looked back. It was just cheaper than paying for SMS or the expensive BB monthly plan so it was a no brainer and has stayed like that ever since, even for iPhone users.