- Although the phone screen shows a signal, calls can be made normally, and the call quality is not significantly affected, it is possible that the full-band jammer has little effect on signal interference or has a limited interference range. If the phone loses signal when it is close to the jammer, it means that there is a base station or signal amplifier nearby, and the current jammer cannot fully interfere. It may be necessary to install a signal jammer with higher power to meet the interference requirements.
- When the phone shows that there is a signal but the call quality is poor, it means that the interference effect of the full-band jammer on the phone is in a critical state. When there is interference, the interference range is unstable. This situation may occur due to fluctuations in signal strength between the base station and the location where the Cell Phone Jammer is used. In addition, some mobile phones with strong anti-interference capabilities may still show a signal when the call quality is degraded.
- In some cases, the phone may show that there is a signal, but it is actually a false signal. The phone cannot make calls or surf the Internet normally, and a “no signal” message or limited service will be displayed when making calls. In this case, the signal displayed on the phone is deceptive, and the phone itself is effectively blocked from communicating with the outside world. Therefore, the phone can only be used for basic functions such as checking the time.
The interference range of the full-band jammer is affected by the signal strength of the mobile phone in the area where it is deployed. If the mobile phone signal is strong, the interference distance of the jammer is short; if the signal is weak, the interference range of the jammer is large.
