Problematic smartphone use splits into two paths as children enter adolescence

A three-year study of 1,821 Chinese children found that smartphone problems either declined or intensified, with family and peer pressures shaping early risk before emotional difficulties became more prominent.

A new study in the British Journal of Psychology suggests that problematic smartphone use in early adolescence does not follow a single path. Instead, it appears to split into at least two distinct developmental patterns, with different risk profiles and different links to family and peer pressures over time.

The research tracked 1,821 Chinese children as they moved into early adolescence, with an average age of 9.57 at the start of the study and 48.5% of participants female. Over three years, the authors used growth mixture modelling, a statistical approach that identifies subgroups with different developmental patterns, to examine how smartphone-related problems changed from one year to the next. They found one group whose levels of problematic use started relatively low and then declined, and another whose use began higher and rose further over time.

The higher-risk group stood out not only for its smartphone use but also for the wider pressures around it. According to the study, children in that group were more likely to face difficult home and social conditions and to report greater levels of related vulnerabilities. The researchers linked early smartphone problems more strongly to external pressures such as parental neglect and peer exclusion in the first phases of adolescence, while internal factors such as shyness, depression and anxiety became more relevant later on.

That pattern fits a wider body of research suggesting that smartphone-related difficulties are often tied to social and emotional strain rather than to device use alone. Previous studies have linked problematic smartphone use with loneliness, shyness, anxiety, poor sleep, family conflict and social isolation, and some longitudinal research has suggested that the relationship can run in both directions. In other words, distress may contribute to heavier smartphone use, but heavy smartphone use may also deepen distress.

The new study goes a step further by showing that those links are not fixed. The authors’ network analysis, which looks at how different symptoms and risk factors connect at specific points in time, found that external pressures mattered most early on, while a broader mix of personal and environmental factors shaped later outcomes. That suggests that interventions may need to change as children grow, rather than relying on a one-size-fits-all approach.

For parents and caregivers, the practical message is clear: early adolescence may be a sensitive period in which family relationships, peer experiences and emotional wellbeing all interact with screen habits. The study’s authors argue that family-focused support and earlier identification of children at higher risk may help prevent problematic smartphone use from becoming more entrenched.