Why does the mobile phone still have a signal after the mobile phone signal blocker is turned on?
In recent years, in various national exams, there have been reports of the use of mobile phones to cheat in exams, which has seriously affected the fairness and impartiality of exams. To this end, the state stipulates that mobile phone signal shielding devices should be equipped during important examinations to create a fair examination room atmosphere for candidates. Sometimes everyone will encounter that the mobile phone signal blocker is clearly turned on. Why do some mobile phones still show signal? How to deal with it?
The mobile phone has a signal in the following situations:
1. The mobile phone shows that there is a signal, and when the mobile phone makes a call, if the mobile phone can connect to the phone normally, and the call quality is relatively high, it will not be affected. If the cell phone signal jammer has no signal, it means that there is a base station or signal amplification at your location, and then it means that the cell phone signal jammer you are currently using cannot meet your on-site shielding requirements. You can install some more high-power cell phone signal jammers.
2. The mobile phone shows that there is a signal, but the quality of the mobile phone call is relatively poor. If this is the case, it means that the shielding effect of the mobile phone shielding device on the mobile phone is in a critical state, and there is a shielding effect, but the shielding range is unstable. This situation may be that the signal strength of the base station's signal to the use site fluctuates, and some mobile phones with relatively strong anti-interference can also occur.
3. The mobile phone shows that there is a signal, but the signal is actually false, the mobile phone cannot talk normally, nor can data access the Internet, and when making a call, the mobile phone will suddenly display no signal, or the service will be limited, at this time, it can be determined that the signal displayed on the mobile phone is False signal, but the phone is actually blocked.
The size of the shielding range of the cell phone signal jammer depends on the strength of the mobile phone signal at the location of the user. Where the mobile phone signal is strong, the shielding distance of the mobile phone shielding device will be shortened. The shielding distance is far.
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