[OneTimePetes]

Yes, i know, no market, no interest in it, but there is this. https://en.wikipedia.org/wiki/Literacy

It correlates with the wealth in a country. An-alphabets will prefer voice chat.

[tut-urut-utut]

Is that why people from marketing department rather call IT people on the phone than typing over a messenger? Or god forbid, use an email.

[WillSlim95]

Very likely, the answer to your question may be close to a Yes

[mangamadaiyan]

Nitpick: Perhaps you meant "illiterate"? I guess you were thinking "analfabeta" :)

[GekkePrutser]

Indeed but the article in particular mentions that this was the suspected region originally but turned out to not be the case.