Mobile cellular telephone : fixed-line substitution in Sub-Saharan Africa

Mobile cellular telephones have been the success story of communications globally. In the developed world, mobile telephony is traditionally seen as being complementary to fixed-line telephony, primarily because of its pervasiveness but also because the fixed-line network provides access to other technologies such as broadband. This article finds that, in nine African countries, in contrast to the developed world, mobile telephony is a substitute for fixed-line telephony – across all income groups and not just low income households as previously thought. The article argues in addition that pre-paid payment options (not just for mobile phones) are key to increasing use by low income households because irregular incomes do not support regular financial commitments in terms of contracts