For places where the use of mobile phones is prohibited, some smart phones cannot receive signals. This is a necessary measure because a signal jammer is used to cut off the radio waves emitted by mobile phones and PHS. . Such jammer devices emit special "deterrent radio waves" to block mobile radio waves and cut off radio waves from smartphones. From a humanitarian perspective, mobile phone jammers are used to keep mobile devices quiet. If a portable jammer is to be used, it has a wider application area and is particularly convenient to carry.
Interfering with how the product works, many customers have this problem. The mobile phone starts working after receiving the signal from the base station. The signal jammer breaks the link between the mobile phone and the base station, thereby blocking the smart phone signal. In real life, many people don't know when and where to turn off their mobile phones to prevent annoying calls, which is one of the methods.
In a way, keep your manners in public places and keep a quiet space. Jammers are made to block signals in places where smart phones are prohibited, such as churches and operating rooms. Mobile phones are a great tool for social interaction, but many companies have difficulty using mobile phones. Some people speak loudly on the phone, which severely disturbs others. There is a way to handle these calls. Use signal interference to solve these problems.