Chinese-American company UTStarcom has been steadily promoting the use of its wireless mobile product on the PHS standard on the continent. In terms of cost to the user, it falls somewhere between GSM and fixed line but is cheaper to set up.
Links
[1] https://www.pambazuka.org/author/contributor
[2] https://www.pambazuka.org/taxonomy/term/3305
[3] https://www.pambazuka.org/article-issue/93
[4] https://www.pambazuka.org/category/ict-media-security
[5] http://www.pambazuka.org/en/category.php/internet/12190