Abstract

Overview

Mobile phones vary significantly in operating frequency, outer shape, and antenna positioning, influencing their electromagnetic field (EMF) distribution and electromagnetic absorption levels in the human brain. This study examines the specific absorption rate (SAR) for different phone models and their impacts on the brain.

Findings

• The SAR for eleven phone models—representing about 86% of phones in the Korean market—was calculated. Models included internal dual-band and external antenna types.
• The study analyzed the impact of phone type, position, operating frequency, and user's age on brain SAR levels using four anatomical head models.
• Key insights include higher SAR at lower frequencies and variations in SAR due to antenna proximity to the brain and variability across phone types.
• Notably, studies should consider the exact phone model to assess accurate EMF exposure for epidemiological relevance.
• The study raised concerns regarding the increased sensitivity of children to EMF from mobile phones.

Conclusion

The research underscores the importance of detailed, accurate reporting of phone model usage in exposure assessments, highlighting potential health risks of varying SAR levels based on phone type and frequency.