The signal jammer is one of the indispensable equipment for college examination rooms, main churches, conference halls, gas stations and other places. Phone Number To Block Cell Phone Calls Its essence is to interfere with the wifi network that is indispensable for mobile communication , so that the mobile phone can't access the network license, so it can't accept the information content from the mobile Internet, and it can't use the Internet to send the information content, but it has no other harm to other electronic products and the body. At this stage, cell phone jammer can shield WiFi signals and their 2/3/4/5G signals, thus greatly reducing the cost.
- In this information age, cell phone signal jammers are also the best available assistants on campus.
- With this shielding device, it is impossible to cheat on the phone at least, or to become addicted to games.
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