Where is the smart phone short message center?

Taking OPPO R9S mobile phone as an example, the method of setting up SMS center is as follows:

First turn on the phone, find the "Settings" icon on the desktop, and then click Enter.

2. After entering the settings, find the "Information" item in the drop-down menu, and then click Enter.

Third, after entering the information, select the "Advanced" option.

4. Then click "Information Center Number" to enter.

Fifth, you can set it after entering.