WhatsCall: the biggest OTT app that you have never heard of
WhatsCall is consistently among the top-5 OTT communications apps (by reported usage) in the Middle East and Africa (MEA), according to Analysys Mason's Connected Consumer Survey. The service uses an ad-funded model to enable smartphone users to make free off-net calls. This comment analyses the success of this app and provides some lessons for mobile operators in the MEA region.