Using software-modified smartphones to validate self-reported mobile phone use in young people: A pilot study

Area of Science:

• Mobile technology
• Public health
• Epidemiology

Background:

• A novel smartphone application was developed and piloted to accurately characterize mobile phone usage patterns in adolescents.
• The study involved 26 young volunteers from France, Spain, and the Netherlands using a modified smartphone for four weeks.

Discussion:

• The application recorded detailed metrics including call frequency, duration, data usage, laterality, and hands-free device use.
• Participants tended to underestimate call counts but overestimate call durations compared to recorded data.
• Mobile phone proximity to the head during calls was consistently high (approximately 90%), primarily on the dominant side.

Key Insights:

• Significant discrepancies exist between self-reported and objectively recorded mobile phone usage data in young individuals.
• Objective data collection via smartphone applications offers a more reliable method for assessing mobile phone use.
• High prevalence of near-head phone use highlights potential for radiofrequency (RF) exposure assessment.

Outlook:

• Validated smartphone applications can significantly enhance the accuracy of radiofrequency (RF) exposure modeling in epidemiological studies.
• Future research should involve larger, diverse samples to further validate the application's utility.
• Improved RF exposure data will contribute to a better understanding of potential health effects associated with mobile phone use.