
The mHealth field is often motivated by potential uses at scale. This is particularly opportune
for Behavior Change Communication (BCC), given the rapid growth of mobile phones in
developing countries. There are over 4 billion mobile phones in the world, and over 60% of mobile subscribers are in developingcountries. Mobile phone penetrationvaries between countries and within countries, but the rapid growth of mobile markets is extending the potential reach of mHealth into the hands of billions of people.
The ubiquity of mobile phones makes them the preferred tool of mHealth for BCC. Low-end mobile phones have demonstrated popularity, cultural appropriateness, scalability, commercial sustainability and infrastructural sustainability. Mobile phones largely meet these burdens of proof for technology in resource-poor environments.
These scalable prospects are balanced by ill-defined challenges. More than other types of mHealth used by staff, BCC communicates directly with populations in their own environments. It may be more difficult to control or even know all the effects of mHealth and BCC on populations. These populations may also be more vulnerable than health staff. For these reasons, the needs of audiences and users are emphasized. This recognizes that health is not the only use of their phones, and phones do not provide a complete or standalone solution for health.
This section offers guides, questions and resources related to the particular opportunities and challenges of mHealth for BCC. At this early stage of mHealth, limited evidence is available for effectiveness in developing countries. To discuss these approaches or suggest other information sources, please go to the discussion board of the mHealth Toolkit.