I do not know about other countries in detail.
Latin America is complicated but full of opportunities for honest and longterm business. I expect some real educational part of the Beta Program taking place to "grow" local devs in the long run. For market success, i do not have a slight idea if they can play the patriot trumpet to win. But phones are monstly bought used as the price point is 100 or 200$ max for the most people. Lets see if they hit that price range.