Abstract

Overview

This study investigates the thermal effects of mobile phones on the human auricle region through controlled experiments. Using a sample size of forty men, temperature variations were assessed by infrared thermography before and after a 15-minute phone call.

Findings

• Temperature Measurements: Measurements were taken in three different phone modes: OFF, ON, and FLIGHT. Results showed that the average temperature in the ON mode was significantly higher compared to the OFF mode.
• Heat Transfer Model: Analysis suggests that the increase in skin temperature is mainly due to heat being trapped by the mobile phone, preventing normal heat dissipation.
• Additional Metrics: The study also measured RSSI and SAR to assess RF-EMF absorption and signal strengths during the phone's different operating modes.

Conclusion

The study concludes that mobile phones can significantly impact thermal behavior of the human ear, primarily through restricting heat dissipation.