It is a joke. It is a marketing gimmick. Airtel’s highly advertised Airtel one network across Africa, does not work or is not yet working as advertised. My company recently got an assignment in Zambia, and my colleague travelled to Lusaka to expedite. On reaching on Kenneth Kaunda International Airport, on 20th January 2014, at about 12:15pm (Zambian time) he tried calling our client in Zambia who is also on Airtel Zambia network using his Airtel Uganda line, 0753072xxx in vain. The call could not go through. My colleagues tried several times to make a voice call to our client,…