But GSM World is not always right... There are actually 3 GSM operators.
Airtel (formerly Zain) has been sold to Orange. But it's not rebranded yet.
http://www.orange.com/en/Press-and-m...d-Sierra-Leone
It's generally seen as best provider with 2G/3G and "3.75G":
French Website with offers:
http://www.africa.airtel.com/wps/wcm.../burkina-faso/
Onatel (formerly Telmob, old incumbent provider, now mostly owned by Maroc Telecom is the "leader in telecommunications" in Bukina Faso offering "3G+" in some towns. Coverage is almost as good as Airtel/Orange and they have CDMA too, but users complain about low data speed and dropped calls.
http://www.onatel.bf/
A 3rd provider called
Moov (formerly Telecel Faso) can not be recommended, because of low coverage and no 3G at all.
Cross-network calls are very expensive. That's why locals often have 2 or 3 SIM cards or dual-SIM phones.