How to get rid of the short message sign on the mobile phone screen?

The message box should still be full. I'll tell you a simple way to see if it works, that is, you take out your SIM card, put it in another mobile phone to read short messages, and then read your information there and delete it. Put it back on your phone and see how it works. I think there should be no problem. That kind of information is in the SIM card, which means the fourth floor. Hehe, it is more convenient to use this method, so I let you use this method.

I hope my method can reduce your troubles!