A recent study suggests that when parents collectively agree to delay giving their children smartphones until they are 14 years old, it may lead to improvements in the mental health of children in the group as a whole. Economist Gregory Veramendi analyzed data from over 12,000 primary schools in the UK, using government records and school surveys to compare mental health outcomes between schools where many parents followed this delay policy and those where few did. In schools where more than 20% of parents signed the "parent pact," there was an eight percent decrease in the number of students with social, emotional, and mental health (SEMH) needs compared to schools where less than five percent of parents participated. The study, published by the Institute for Fiscal Studies but not yet peer-reviewed, highlights that widespread adoption of the pact could significantly reduce the need for mental health support among students. Veramendi noted that while schools in the UK are now required by law to enforce smartphone bans during school hours, these measures alone do not provide major mental health benefits. He explained that the coordinated delay in smartphone ownership changes the social norm around when children receive their first smartphone and is a low-cost approach for families. The "parent pact" was introduced in 2024 by the campaign group Smartphone Free Childhood, which reported that over 165,000 families have signed the agreement. However, Cadice Odgers, a professor of psychology and informatics at the University of California, Irvine, warned that the study should not be interpreted as proof that delaying smartphones directly causes better mental health. She pointed out that the research only tracked parental intentions, not actual smartphone use or exposure levels among children. Odgers questioned whether the delay in smartphone ownership was truly linked to the reported mental health improvements. This caution comes in light of previous research from King's College London, which found that one in four children and young people have a problematic relationship with smartphones, similar to behavioral addiction. While the study presents a potential correlation between delayed smartphone access and improved mental health, experts emphasize the need for further research to confirm a direct cause-and-effect relationship. The findings suggest that collective parental action may influence broader social norms, but the role of smartphones in youth mental health remains a complex and evolving area of study.