In their working study, Caitlin Myers and Ezekiel Hooper argue U.S. counties with more concentrated AT&T coverage between 2007-2011 saw a decrease in birth rates due to the advent and accessibility of the iPhone.

Caitlin Myers and Ezekiel Hooper present a working study analyzing demographic trends in the United States. Their research indicates that U.S. counties featuring more concentrated AT&T coverage from 2007 to 2011 experienced a decline in birth rates. The authors attribute this specific downward trend to the advent and increased accessibility of the iPhone during that period, suggesting a correlation between the availability of this technology and a reduction in the number of births recorded.