Can cell phone signal blockers block 4G signals?

Can cell phone signal blockers block 4G signals?

Today, the author will talk to you about whether the mobile phone signal jammer can effectively shield the 4G network signal? This topic is convenient for everyone to have a more comprehensive understanding of the signal jammer. The following is a summary of some knowledge about cell phone signal jammers.

1. Commonly used mobile communication network signals In addition to the 4G network signals that are currently widespread, there are also 3G network signals that were popular in the past few years, as well as 2G network signals used by some old mobile phones. Although the 5G network signal has become a topic that many people are discussing now, it will take some time before the 5G network is widespread.

Second, the first thing that can be clear is that the mobile phone signal blocker can block the 4G network signal. When the mobile phone works, it is within a certain frequency range. The mobile phone and the base station are connected by radio waves to complete the transmission of data and sound with a certain baud rate and modulation method. In view of this communication principle, the mobile phone signal jammer scans from the low-end frequency of the forward channel to the high-end frequency at a certain speed during the operation. The scanning speed can cause garbled interference in the received message signal of the mobile phone, and the mobile phone cannot detect the normal data released from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as finding the network, no signal, no service system and so on.

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3. The key to shielding 4G network signals depends on the frequency supported by the selected mobile phone signal jammer. The current 4G frequency band range is very wide, ranging from 800M-2. 4G, if you want to shield 4G signals, it depends on what you use for shielding. How much bandwidth can the device support. Because part of the 4G frequency band almost coincides with the 2.4 of WIFI. Once you block the 4G signal, it may make the WIFI and Bluetooth in the shielded area unable to work normally. Therefore, whether the 4G signal can be shielded mainly depends on the function of the shield product and whether the device has a 4G signal shielding module.