My mobile phone is from Mianyang area. I can't send a short message because I'm dialing a number in the information center. What's the number, please

I should not be able to reply directly. Or cannot be sent from the phone book.

Try to enter the phone number manually after sending the text message. That should be enough.

It's the service center. Or change the phone book number to 13xxxxxxxxx instead of +86 13xxxxxxxxx.