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How to prevent mobile phones from being blocked by cell phone detector?

When I arrived at the exam school recently, the signal seemed to be turned off all of a sudden. I wonder if there is a cell phone detector. How can I prevent him from blocking the cell phone signal?

2021-01-28 at 09:30

Answers

The current mobile cell phone detector are all full frequency bands. It can shield all the 2G 3G 4G signals, 2.4G WIFI signals and Bluetooth signals under all the three operators of China Mobile, China Unicom and China Telecom. Its principle is sent by itself. The frequency interferes with the mobile phone receiving the frequency from the base station and wireless router, so as to achieve the purpose of shielding them. So as long as the mobile phone is in the room where the mobile cell phone jammer is turned on, the mobile phone cannot make and receive calls, send and receive text messages, and surf the Internet. This cannot be avoided by cracking the number and band, because no matter which number or band you use, it is within its shielding range. There is also Bluetooth software that is not acceptable, because its frequency will also be blocked by the shield. The only way is to install a cell phone signal amplifier near the place where the cell phone jammer is used to counter it.

At present, the frequency band of mobile phones is between 800-2200, and the mobile phone shielding device is produced to shield the mobile phone signal, so it is impossible to use ordinary mobile phones to prevent mobile cell phone detector. Just like a cat and a mouse, a cat is born to catch a mouse. If you ask a mouse how to prevent it from being caught by a cat, unless the mouse is as big as a dog. You can also put a magnet on the mobile cell phone detector. It’s okay to boot up half an hour after the exam room. Sometimes you can use Unicom’s wcdma network.