This guy has a point on if the service is any cheaper than GSM since both parties will be paying for the data, and if one parties data runs out the call disconnects, if one parties data runs out and they have credit then they use off plan data which is more expensive so you find whatsapp can be expensive in some cases
Rink---http://tommakau.com/2015/04/01/what-whatsapp-voice-means-for-mnos/

This will be counter productive. No need fighting an idea whose time has come. If I was a telco, I would come up with enticing data plans. Remember who banks tried to frustrate MPesa when it started? Who is laughing now?

http://tommakau.com/2015...p-voice-means-for-mnos/
Read this before you decide if it's cheaper or expensive.

That story is flawed from the start. The fellow has used wrong data to "prove" a point. A three to four minute call (I have checked thrice!!!) consumes approx. 1 MB (on the higher side). A 7 minute call would therefore consume approx. 2 MB. This fellow uses 5 MB (More than double!) in his argument and totally skews everything.

How do you write a blog and you cannot even perform a simple experiment to collect primary data. You can even borrow a phone, check the bundles, make a call then check the call duration and bundles again. End of experiment!! The whole story is based on bundles and cost and the fellow cannot collect the easiest data ever to collect. Lazy character!!!!

@chris79 - If you talk to me for a minute, it will consume only 0.3 MB of your data. That is 30 cents on a relatively expensive data bundle. How cheap do you think people are? 30 cents!!!

Are we talking about the Kenya who keep sending each other pictures and videos on WhatsApp that gobble MBs at a much much higher rate???