Overview
- On Wednesday, July 1, 2026, coverage of a new National Bureau of Economic Research working paper highlighted the claim that the early iPhone rollout explains roughly 33 to 52 percent of the U.S. fertility drop for women aged 15–44.
- The study uses Apple’s 2007–2011 AT&T exclusivity to compare areas with strong AT&T customer bases to other markets and finds big falls in young-age birth rates, including a 4.5 percentage-point drop for ages 15–19 and a 3.2-point drop for ages 20–24.
- Authors point to observable behavioral changes tied to smartphone diffusion—less time spent with friends in person, lower partnered sexual activity, and higher pornography consumption—as plausible mechanisms linking phones to fewer births.
- Critics and some outlets note important caveats: the analysis is observational, AT&T early customers skewed urban and better educated which could confound results, and the paper is a working paper that requires replication and more tests before firm causal or policy conclusions.
- If the finding holds up, it suggests technology-driven shifts in social life could limit the impact of traditional fertility policies such as cash payments or childcare support, but researchers urge further study and cross‑national checks before changing policy.