Comparisons of EMF Strength during Connected to Wi-Fi, Making Phone Call and Making Phone Call while Connected to Wi-Fi

  • M. H. N. Mat Ali Universiti Sains Malaysia
  • N. H. Mohd Taib Universiti Sains Malaysia
  • N. H. Kamarudin Universiti Sains Malaysia
  • M. N. S. Yusoff Universiti Sains Malaysia


The increasing use of mobile phones, WiFi, and other wireless devices has raised public concerns about the impact of electromagnetic field (EMF) radiation on human health. Both mobile phones and WiFi devices use the same EMF frequency range, specifically within the radiofrequency (RF) and microwave (MW) range. This study aimed to measure the RF and MW radiations which is described by 1) electric field strength E, 2) magnetic field strength H, and 3) power density S. Measurement was performed using an EMF meter for three different modes, specifically 1) while connected to Wi-Fi only (labeled as Wi-Fi), 2) while making a voice call only (Call), and 3) making a call while connected to Wi-Fi (Wi-Fi & Call). The EMF parameters were measured by locating the EMF meter from 0 to 100 cm distance, at every 10 cm interval from the mobile phone for every mode. Results indicate that WiFi & Call exhibited the highest EMF exposures, followed by Call and WiFi. All modes showed a decreasing trend of EMF exposure with increasing distance from the mobile phone. The measured EMF exposure was compared with the standard limit set by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). The highest measured electric field strength was 1260.53 mV/m which corresponds to 2% of the ICNIRP limit. The highest measured power density corresponds to 1% of the ICNIRP limit. To conclude, in all modes, the EMF became weaker as the distance from a mobile phone is increased. Mobile phone connection to Wi-Fi contributes to lower EMF radiation exposure compared to a phone call. A combination of making voice calls while connected to Wi-Fi contributes to elevated exposure risk. The highest EMF exposure measured was from this mode. However, the highest exposure recorded in this study corresponds to 2 % of the ICNIRP limit.

How to Cite
MAT ALI, M. H. N. et al. Comparisons of EMF Strength during Connected to Wi-Fi, Making Phone Call and Making Phone Call while Connected to Wi-Fi. Physics and Technology in Medicine, [S.l.], v. 2, n. 1 & 2, p. 51-57, dec. 2021. ISSN 2710-723X. Available at: <>. Date accessed: 28 may 2022.
Radiation Physics and Safety