The reason why bomb jammers affect mobile phones is mainly related to their working principle and frequency band used. The following are several main points:

Working principle:

The bomb jammer is mainly designed to interfere with and prevent the activation of remote-controlled bombs. It emits electromagnetic waves of a certain frequency, covering specific frequency bands, thereby generating interference on these frequency bands.

Frequency band coverage:

A car mounted jammer manufactured by an Israeli company covers an electromagnetic spectrum range of 20 megahertz (MHz) to 3 gigahertz (GHz). This range includes the frequency band in which most mobile phones operate (in the ultra-high frequency range of 300 MHz to 3 GHz).

When the bomb jammer works, the electromagnetic waves it emits will cause interference in the above frequency band. Due to the fact that mobile phones also operate in this frequency band, they will be affected.

Mobile communication interference:

Due to the electromagnetic waves emitted by the bomb jammer being similar or overlapping with the frequency used for mobile phone communication, the normal communication of mobile phones will be disrupted. This may lead to a decrease in phone signal quality, communication interruption, or inability to function properly.

Potential security risks:

In specific situations, such as improper use of bomb jammers or being too close to the phone, it may cause damage to the internal circuits of the phone. It may even cause safety hazards (although this situation is relatively rare).

The reason why bomb jammers affect mobile phones is that their working principle and frequency band intersect. To avoid this situation, mobile phone users should try to stay away from possible sources of bomb jammers when using. Related communication operators and manufacturers are also developing new technologies to reduce this interference.