Philip Roessler of The College of William & Mary and Laiah Idelson of ETR both in the U.S. will test whether promoting cooperative mobile phone use in families in low-resource settings can improve household income and welfare. In their recent study, they found that providing a cost-free smartphone to poor households in Tanzania had a significant, positive impact on their economic state. The impact appeared to be catalyzed when both the male and female members of the household shared the smartphone and abolished when male members monopolized it.