Some basic skills and usage methods of different jammers
During the final exam, everyone might be wondering how to make some cheat sheets and how to get some answers so that they don't miss the exam. But generally in the examination room you can only rely on yourself, and rely on others to always be restricted, so some people catch the phone and don’t hand in and search for the answer. But there is the hateful signal jammer in front of it. I am really anxious and know the answer. It's on the Internet, but it just can't be loaded. I'm really anxious.
Next, tell everyone what signal jammers can interfere;
Effectively interfere with CDMA (China Telecom), GSM (China Mobile, China Unicom), SCDMA (Netcom Great Smart), DCS (1800MHz), PCS (1900MHz), PHS (Telecom PHS), 3G mobile phone signals, WIFi and 4G mobile phone signals Wait for all communication signals.
So what is the interference principle?
The working principle of the mobile phone: within a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission is completed with a certain baud rate and modulation method. The working principle of the signal jammer: The portable jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. This scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.
It can be seen that its interference ability is still very good, but when traveling in high school, I once heard a junior on the train say something. Once in his freshman and sophomore year, 4G was not popular at that time, and mobile phone interference The device can’t interfere with 4G signals, but there are mobile phones that support 4G signals. So some students use their own living expenses to buy them, some cheat to keep themselves out of subjects, and some get scholarships. There is wood. But the school discovered this in the junior year. It is not too late to make up for it. It has not happened until now. However, in 17 years, China is preparing to vigorously develop 5G, so everyone still has the opportunity to take advantage of the loopholes...
Now I teach you a simple cracking method, most mobile phones can be used, the length of time to crack depends on the quality of your phone. In fact, the method is very simple. Enter your phone settings, click "Network Settings", change the network mode to "Manual Mode", then enter "Network Search", wait until the words "China Mobile" or "China Unicom" appear, just Exit now. The phone will have a signal, but the anti-interference time depends on the quality of the phone. This method is applicable to most mobile phones. There is also a wireless network, but it is estimated that many classrooms do not support wireless networks. The other thing is to loosen the frequency band antenna on the jammer that interferes with your mobile phone signal. If you loosen it, it will be useless. Finally, I wish you every success in the exam, and you have learned everything.