How did the liar know my phone number?

First of all, one of the main reasons is that you fill in your mobile phone number, personal information and so on at will on the roadside.

Now there are more and more people handing out leaflets on the roadside, and more people will ask for your personal information. Their purpose is simple. Knowing your mobile phone number will usually push you all kinds of advertising information, so that they can not only promote their products, but also play a role in communication.

Secondly, there is another important place that many people don't pay much attention to, that is, the train tickets bought every day are littered.

This is a very bad habit. Many people may not notice that there is a QR code on the train ticket. Now this QR code is where your personal information is stored. Anyone who scans a QR code with mobile phone software will scan out your personal information, including your name and mobile phone number.

In this way, criminals will know your mobile phone number and send you text messages and phone calls at random.

There are also many platforms registered on the website. Many of them will sell many customers' mobile phone numbers and other information to scammers at different prices, which brings them great convenience. The general liar means telecom fraud, so it will make people suffer.