How to set up SMS automatic reply for telecom mobile phone?

Dear telecom users, hello! According to your description:

I suggest you do this: Go to the phone settings-Phone-Call, and set "Reject SMS" as-Yes here.

Just write your own SMS reply. When there is an incoming call in the future, the button on the right will display "Turn off the bell". Click this button, and the button on the right will become "Send SMS". Click this button and it will be OK, and the message will be sent.

If you need to check the bill and pay the phone bill, please go to the online business hall of Anhui Telecom.

I hope my answer can be adopted by you.