Why do mobile phones often receive sexual harassment messages?

Your mobile phone may be infected with Trojan virus, which will send your personal data to the hacker who made the virus and make a profit by selling it.

Harassment messages, as the name implies, are spam messages sent to you by major advertising companies. There are credible news and false news, but false news accounts for the vast majority. You may have borrowed money from a platform, leaked your personal information, or visited a website that you shouldn't have visited. Some dangerous websites will steal personal information, or the phone number contained in the calling card you bought is already on the advertising push list. (Advertising push sheet refers to the target of purchasing resident information. )