You can't send text by SMS, but you can send pictures. What happened?

SMS can't be sent, depending on whether the input method is normal or not, and whether it can be input normally in other places. If so, you can rule out the input method problem. If you can't input it normally, it's the input method. It's not an input method, it's a SMS application. If necessary, back up important files and reset the system to restore it.