A new working paper found that counties with broader early iPhone access saw larger declines in births among teenagers and women in their early 20s, adding to research examining smartphones’ possible role in falling fertility rates.
By yourNEWS Media Newsroom
A new scientific paper is examining whether the rapid spread of smartphones played a meaningful role in the long-term decline in American birth rates, with researchers finding that early access to the iPhone was associated with lower birth rates among young women.
The paper, titled “Is the IPhone birth control?” reviewed U.S. fertility trends after 2007, the year Apple introduced the iPhone. The study’s abstract said the U.S. general fertility rate has fallen 22% since 2007 and that the decline has not been easily explained by economic conditions, contraceptive use, housing costs, childcare costs or other frequently cited factors.
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“The U.S. general fertility rate has fallen by 22% since 2007, a sustained decline not readily explained by economic conditions, contraceptive use, housing or childcare costs, or other commonly cited factors. We assess the potential role of a different shock: the diffusion of the smartphone,” the study’s abstract reads.
The researchers focused on the period from 2007 to 2011, when the iPhone was available in the United States only through AT&T. That limited carrier availability gave researchers a way to compare counties with widespread AT&T coverage to counties with little or no access to the network.
According to the paper, counties with greater early access to the iPhone saw larger declines in births among younger women. The researchers found that iPhone access correlated with birth reductions of 4.5% to 8.0% among females ages 15 to 19 and 3.2% to 6.6% among women ages 20 to 24.
The study also found smaller but statistically significant declines among older women.
The researchers said the iPhone and similar devices should not be viewed as the only factor behind declining fertility, but concluded that smartphones “played a sizeable role” in the drop in U.S. births.
“As modern smartphones diffused, time spent with friends in person and sexual activity fell sharply alongside rising consumption of pornography, a possible substitute for partnered sex,” they concluded.
The findings add to a growing body of research examining whether smartphones changed social behavior in ways that affected fertility. A separate study by University of Cincinnati economists Nathan Hudson and Hernan Moscoso Boedo, published in May, examined smartphone penetration and teenage fertility rates across 128 countries using World Bank data.
That study, according to Medical Xpress, found that birth-rate declines accelerated once smartphones became widely available. The pattern appeared across countries with different health care systems, welfare policies, economies and cultures.
Hudson and Boedo described the phenomenon as “a common global technology shock.”
The smartphone fertility research is emerging alongside broader discussion about demographic change in the United States. Alex Jones Lives reported that white students now comprise less than half of all Americans enrolled in school, from nursery programs through graduate education, citing U.S. census data.
Enrollment of white students, classified as non-Latino and non-mixed-race, declined from 46.7 million in 2000 to 36.6 million in 2024. That placed white students at 48.8% of all students in public, private and homeschool systems.
Latino enrollment increased over the same period, rising from 10.2 million in 2000 to 18.4 million in 2024. Latino students now account for 24.4% of all students.
The shift is most visible among younger students. White non-Hispanic children account for 47% of nursery and kindergarten students and 48% of elementary and high school students, according to the report. Higher education is the only segment where white students remain a majority, at 51%.
The report said Hispanic college enrollment remains lower than white college enrollment, at 37.3% compared with 53.9%.
The demographic trends also reflect differences in fertility rates. In addition to immigration, Hispanics have had the highest birth rate in the United States for some time, according to the information provided. The 2022-2024 average birth rate was 64.3 for Hispanics, compared with 51.4 for whites.
In 2024, white births fell below half of all U.S. births, at 49.6%, while all other groups combined accounted for 50.4%.
The new research does not claim smartphones alone caused the decline in American fertility. But by comparing early iPhone availability across counties, the study adds evidence that rapid changes in communication technology may have affected in-person social activity, sexual behavior and birth rates during a period when U.S. fertility began a sustained decline.
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