Can signal jammer only block cell phone signal but not wifi?
When we use the signal blocker, we will encounter the situation that we need to block the mobile signal of the mobile phone but not the WiFi signal. In this case, can the signal blocker only block the mobile phone signal but not the WiFi?
At present, the mainstream signal jammers on the market are full-band shielding, that is, all 2G/3G/4G/5G/WiFi signals are shielded. When we need to shield mobile phone signals separately, but do not want to shield WiFi signals, we need to find jammer gps manufacturer. Customization, under normal circumstances, the signal jammer has already set the frequency band that needs to be shielded when it leaves the factory. When the signal jammer is received, just turn on the power supply and turn on the switch to start the signal shielding work directly. If you want to adjust The specific frequency band to be shielded needs to be set by the manufacturer of the shield.
If you want to test your cell signal to determine if one of these things is impeding it, it's helpful to understand how signal is measured in order to accurately determine the signal strength you're receiving.
Cell phone signal strength is measured in decibels (dBm). Signal strengths coming from various networks range from about -30 dBm to -110 dBm, and the closer to zero the decibels are, the stronger the cell signal. A signal better than -85 dBm is considered to be good cell phone signal strength.
Call quality is actually a far more accurate measure of cell signal strength than the bars on your cell phone because there is no industry standard for what a bar represents or whether it measures your 4G data or 3G voice performance. Therefore, bars will indicate a different level of coverage from carrier to carrier. You can also enlist the help of a professional integrator, who can perform a site survey in your building using a tool called a signal meter to determine the quality of your signal with absolute certainty.