Apple mobile phone sends text messages automatically.

If you play games, you may unconsciously send an activation message by default. Also, I didn't say that anti-virus software is basically useless in mobile phones, except occasionally cleaning up garbage. The computer anti-virus software is so good that it has been poisoned and stolen, not to mention the mobile phone. If you don't download software from regular websites and forums, it is easy to be bound by the background (formality can't be completely guaranteed, at least I haven't met it). Before watching the news, it can only be detected when it is running occasionally, so I suggest you brush your computer.