http://www.theverge.com/2015/1/5/7493291/Microsoft-nokia-215-cheapest-internet-phone
Awesome.
The mozilla and firefox phones also look quite promising for African markets;
http://www.ubuntu.com/phone
https://www.mozilla.org/en-US/firefox/os/#adaptive-wrapper
I hope these are also considered if they start to catch on in Africa.
EDIT: https://blog.mozilla.org/blog/2014/11/04/mozilla-and-gsma-enabling-locally-relevant-content-for-the-next-4-billion-people/
You can see from this link that Mozilla has real long term goals when it comes to third world countries; having Kobocoin be available in some form on these phones could easily propel it into the market.