If you count -all of europe- as a developing country, sure.
In europe we never had free unlimited texts. Internet was cheaper than calling/texting, especially with everyone having wifi at home and work. So a cross-platform messaging app appeared and has replaced text and calling.
In europe we never had free unlimited texts. Internet was cheaper than calling/texting, especially with everyone having wifi at home and work. So a cross-platform messaging app appeared and has replaced text and calling.