Sensing an Activated Mobile Phone by using Transmitted Signals

The changes that have taken place over the centuries have led to the better development of science and technology, but have also aroused many scammers. Some examples of technologies that have evolved in recent years include: there is online transactions, internet banking, sports and other entertainment. Especially in education during the pandemic (COVID-19). In this situation, the use of mobile phones was compulsory. After the pandemic, students continued to attend school, college, and resume real life, but kept their mobile phones in the facility. For example, students in a classroom or examination room may seek to communicate informally with those outside the hall for whatever purpose. Mobile phone activity is identified by the presence of a transmitted signal. It is based on radio frequency (RF) principles. Developing and implementing a mobile phone detector is part of our project. This portable gadget will identify a cell phone that is also in silent mode (an active cell phone). This detector is designed to detect within a radius of 1.5 meters