Why does my mobile phone automatically download software and send text messages?

Your mobile phone has been tampered with. You can do the following things 1: The mobile phone is equipped with spyware, which is the so-called mobile phone virus, and consumes the phone bill of consumers by automatically sending text messages and calling the Internet (most likely, I suggest you go to customer service for antivirus or reinstall the system 60 yuan); 2. Your mobile phone has been used by others; 2. You have started a certain business (unlikely). Good luck 1.