Why can't scam messages be intercepted?

The new number is not recognized as a scam message, and it is inevitable that there will be loopholes in intercepting too many scam spam messages.

Common spam messages are generally sent by pseudo base stations. For example, many short messages from pseudo base stations will induce users to click on the websites in the short messages, and these websites generally carry Trojan virus. Once clicked, criminals are likely to master the information on the mobile phone and conduct subsequent fraud activities. The so-called pseudo base station is a radio transmitter disguised as an operator base station. It uses the advantage of high local power to interfere and shield the communication signals of operators, and then masquerades as the operator's network, allowing users' mobile phones to connect to their own networks to achieve the purpose of sending short messages.

In general, the number is stored in the address book, and generally it will not increase or decrease too much. After all, these numbers are all added manually by themselves, and they are all people who know the names of the notes. If unknown numbers often appear in your mobile phone, and the tag is not clear, and you have not dialed them yourself in the call record, then your mobile phone may be monitored after this happens. So if you find some strange numbers on your mobile phone, you must delete them or join the blacklist in time.