Before the cell phone jammer is officially put into use, it is not sure whether the cell phone signal jammer can meet the shielding requirements of the use site. Therefore, the shielding effect of the mobile phone signal jammer at the use site must be tested first, and then the mobile phone signal jammer can be determined. installation location and quantity.

Before powering on the mobile phone signal jammer, first roughly determine where you want the cell phone signal jammer to be installed at the use site, and then place the cell phone signal jammer on the desktop against the wall. Generally, it is placed first on the use site. At the front and rear corners of the site, turn on the power of the cell phone signal jammer and turn on the switch. Then you can test the shielding effect of the cell phone signal jammer.

When testing, first prepare three cell phones from different operators and they can be used normally. It is best to have three cell phones of different brands. Then place the cell phone in the opposite corner of the cell phone signal jammer, which is also the farthest position from the cell phone signal jammer. Then let the cell phone sit for about 2 minutes. During this period, do not perform any operations on the cell phone, and then check the cell phone screen. Check whether the cell phone signal is blocked. If it shows no cell phone signal, then the cell phone of this operator is blocked. In this case, it can be determined that the cell phone signal jammer can block the entire use site. If a certain cell phone shows that there is a signal, you can try to call the operator's customer service hotline, or use the mobile phone network for data access. If the phone does not respond for a long time when making calls or data surfing the Internet, you need to try this operation multiple times until there is no signal or the phone signal is restored. If you can make calls or use data to access the Internet, move your phone closer to the cell phone signal jammer, and then proceed to the previous steps to test repeatedly. Repeat this process until the phone cannot make calls, cannot access data or access the Internet, or the phone shows no signal. Use this to determine the shielding range of a certain operator's cell phone signal by the cell phone signal jammer, and then use this shielding range to determine the number of cell phone signal blockers to use.

If the cell phone signal at the site is strong and the low-power cell phone signal jammer cannot completely block the cell phone signal of a certain operator, you can determine the signal frequency band that the cell phone signal jammer cannot block, and then use the tested frequency band to Just do the direct interference of the high-power shielding module for this frequency band. First, you need to use an Android phone to download the Cellular-Z mobile APP, then open the mobile APP with the cell phone signal jammer turned on, and then take a screenshot and send it to the manufacturer of the mobile phone signal jammer, who will determine the mobile phone signal jammer. Mobile phone signal frequency bands that cannot be blocked. Finally, by using a high-power shielding module to cover the frequency band with a strong signal, the on-site mobile phone signal can be shielded.