The jammer does not really play the role of interference. In principle, it mainly plays the role of interference, just like electromagnetic interference in movies.
The mobile phone signal jammer scans from the low-end frequency of the channel to the high-end at a certain speed. This scan can cause garbled interference in the message signal received by the mobile phone, causing the mobile phone to fail to detect the normal data sent from the base station, making the mobile phone unable to communicate with The base station establishes a connection, and then the mobile phone will behave like searching the network, no signal, no service system, etc.
Now that you know the principle, there are several ways to prevent mobile phones from being blocked:
1. Interference with jammers
First get the operating frequency of the internal circuit of the cell phone jammer, and then place the radiation source of the same frequency near the jammer, and apply a Power level, so that the jammer cannot work normally. But this difficulty is a bit high, and a bit silly.
2. Make a shield
Place the jammer in the shield so that the jammer can be completely disabled. But this approach is still a bit silly, you all know that the jammer is there, just cut off the Power supply!
3. Manual adjustment via mobile phone
Click on the phone settings, click on "Network Search" in "Network Settings", change the network mode to "Manual Mode", then enter "Network Search", wait until the words "China Mobile" or "China Unicom" appear, then Exit immediately, the phone will have a signal at this time, but the length of the anti-blocking time depends on the quality of the phone, generally only a few seconds to ten seconds, but this method can be used all the time.