What does Le Xuan game mean by sending messages to people?

If there are always games that send you text messages because you were registered when you played this kind of games before, and you filled in your personal information, name, ID card and phone number when you registered, the games you played are too registered, and it is possible or possible that the information will be leaked, so there will be games that often send you a lot of text messages, and you will receive them.