Why does SMS automatically close?

It should be a text message. That message is about the computer program. You should be fine if you don't open it. I have received similar information. When the phone is turned on, the screen of the phone flashes wildly, and the motor in the phone is also turning. (The rotation sound is abnormal, as if it were reversed.)

So I guess your message is the same as what I received. And this program only supports ordinary mobile phones (non-smart phones).