Determination of Electromagnetic Radiation Emitted From the Sides of Different Brand of Cell Phones

The study aims at determining the electromagnetic radiation emitted at the front and back side of different brand of cell phones (ITEL, INFINIX and TECNO) when charging, fully charged and at low charge when placed at call mode, text mode and standby mode. A portable near field electromagnetic radiation tester 9024-EN-00 was used to measure the electromagnetic radiation levels. The wave power density was computed as a function of modes (call mode, text mode and standby mode) for all the phone models when fully charged and when at low battery. Further computation of the power density was done as a function of distance from the test phones when charging. Result of the study shows that there is little or no radiation on the back side of all the phones when placed in any of the mode when either fully charged or at low battery. The front side of the phones exhibit different values of the radiation intensity. With the call mode having the highest intensity followed by the text mode and finally the standby mode. A comparison between when the phones are fully charged and when they are at low battery show that the intensity of radiation is higher when the phones are at low battery than when fully charged for all the different mode experimented. The wave power density levels also significantly varied with distance up to 40cm when there is little or no radiation from all the phones.