It doesn't matter why, the fact of the matter is that no one uses SMS in these places, which is also true wherever I've lived. People use Whatsapp primarily, o

It doesn't matter why, the fact of the matter is that no one uses SMS in these places, which is also true wherever I've lived. People use Whatsapp primarily, or facebook messenger, or (in my bubble anyway, not so widespread) Telegram. These products have the network effect already established, and no one is likely to go back to crappy SMS, even if it is dressed up.