Why does the phone screen not work properly?
In order to facilitate customers to use mobile phone shielding, this article will summarize some reasons that may cause the shielding you ordered to not work properly!
1. You must order suitable shielding equipment according to your needs, which is more important!
1) If you want to stop the phone, you must choose 2G 3G 4G full-band signal blocker. At this point, you must consider whether to add additional functions such as GPS (satellite positioning) or wireless (wireless Internet access)!
2) Choose a suitable power supply: the portable shield has low power and is easy to heat, and the desktop shield has high power and good heat dissipation. The shielding range of desktop shielding is farther!
3) If you want to stop the GPS orbit, you need to choose a 2-in-1 jammer (low-cost 2G GPS jammer)) at least! Because when you only use a small GPS jammer to block the GPS, it will automatically activate the built-in SIM card to achieve GPS positioning.
2. After receiving the portable jammer with battery (desktop jammer without battery), it must be fully charged within 6-10 hours;
3.All antennas must be installed in accordance with the signs (1-12-23-3 4-4 5-5 6-6 7-7 8-8 or Global Positioning System Global Positioning System Global Positioning System). More importantly, do not install the antenna! Do not open the protective cover
4. Interference range: position signal strength = -75dBm. The interference distance will vary according to the signal strength and location. If you are close to the signal base station, the interference effect will be very poor!