Why does this kind of advertisement appear on iphone and how to stop it?

The iPhone system sent by the enterprise comes with its own unique burn after reading SMS, which cannot be blocked. There is nothing we can do now. I can only download less apps that register such rogue companies and try not to disclose my mobile phone number to these rogue companies. This kind of short message from burn after reading can't be stopped by operators, and neither can Apple. Now the environment is like this, super annoying, I can only bear it.