Recently, our school has an exam. Unlike in previous years, during the exam, the closer to the classroom, the weaker the mobile phone signal, or even disappeared. What is going on?
According to your statement, it may be common practice to have wifi jammer installed in your school classrooms, and many countries use cell phone signals to interfere with the device during the exam. shield.
Recently, our school has an exam. Unlike in previous years, during the exam, the closer to the classroom, the weaker the mobile phone signal, or even disappeared. What is going on?
According to your statement, it may be common practice to have wifi jammer installed in your school classrooms, and many countries use cell phone signals to interfere with the device during the exam. shield.