Five characteristics of mobile phone eavesdropping

1, automatic on-off often occurs.

2. There is an echo when talking on the mobile phone. There is a disturbing sound, a squeaking sound, but you may not know it until you listen carefully.

3. The network is interrupted for no reason.

The first time you call, the other party will not respond.

5. Crosstalk phenomenon.

6. SMS interception phenomenon.

The phone was tapped. note:

Mobile phone monitoring refers to a kind of monitoring behavior of mobile phones through external hardware devices or internal software. Another way of saying it is that some programmers achieve their goals by compiling the remote control hidden in their mobile phones.

First of all, it is a software program. This Trojan needs to be connected to the mobile phone. It can back up all the call records, contents, short messages and the like of this mobile phone, and upload them to a fixed location through the mobile network or WIFI of the mobile phone, thus eavesdropping on other people's content.

Second: it is a kind of so-called "card copying" and the like. SIM card of mobile phone can be copied. Put the original card into a special card reader to read relevant data, and then output the original card data to a new card. After copying, both cards can answer the phone and send and receive short messages, but they can't answer and send and receive short messages at the same time, which means that the copied cards can't do monitoring, positioning and other related functions.