Under the interference of the full-band jammer, why does the mobile phone still have a signal display?
1. There is a signal displayed on the screen of the mobile phone. When making a call, the mobile phone can still be used normally, and the call quality is relatively good and is not affected. In this case, it is possible that the full-band jammer does not achieve effective interference effect, or it is the interference of the signal jammer. The range isn't that big. If there is no signal when the mobile phone is close to the jammer, it means that there is a base station or signal amplifier at your location, which means that the jammer you are currently using cannot meet the on-site interference requirements, and you can install more high-power signal jammers.
2. The mobile phone shows that there is a signal, but the call quality of the mobile phone is very poor, which means that the interference effect of the full-band jammer on the mobile phone is in a critical state. There is interference effect, but the interference range is unstable. This situation may be caused by unstable signal strength from the base station to the site of use, and this may also happen with some mobile phones with strong anti-interference capabilities.
3. The mobile phone shows that there is a signal, but it is actually false. It cannot make normal calls or data access the Internet. When making calls, the mobile phone will display no signal or restrict services. At this time, it can be determined that the signal displayed on the mobile phone is a false signal. But the actual phone is blocked. At this time, the mobile phone cannot be used normally with the outside world. At this time, the mobile phone can only watch the time
The size of the interference range of the full-band jammer depends on the strength of the mobile phone signal at the location of the unit. Where the mobile phone signal is strong, the interference distance of the device will be shortened. In places where the mobile phone signal is weak, the interference range of the jammer will be smaller. get bigger.