In a multisite randomised clinical trial, Lester et al. (2010) aimed to assess whether mobile phone communication between health-care workers and patients starting antiretroviral therapy in Kenya improved drug adherence and suppression of plasma HIV-1 RNA load. Patients who received SMS support had signifi cantly improved ART adherence and rates of viral suppression compared with the control individuals. Mobile phones might be eff ective tools to improve patient outcome in resource-limited settings.