Joke Collection Website - Blessing messages - Why did I send me 10 and 1 when I went to a foreign tourist area, asking me to consult them? How do they know what my mobile phone number means?

Why did I send me 10 and 1 when I went to a foreign tourist area, asking me to consult them? How do they know what my mobile phone number means?

There are two situations:

One is corporate behavior.

Unless you have registered your mobile phone number when booking or buying tickets, it is impossible or not to know your mobile phone number.

Many enterprises like to build customer data. In order to promote their business.

The other is government behavior.

Technically, mobile communication can identify which base station your mobile phone is in.

A base station can send information to all mobile phones within its coverage. You don't need to know your mobile phone number.

Government announcements, weather warnings, travel guides, etc. It is all sent to mobile phones through this technical means.