+86 13800***500, where * * * is your area code, go to 0; The area code is a 3-digit area followed by 0.
For example:
The area code of Jinan is 053 1, and the information center is+8613800531500.
The area code of Shanghai is 02 1, so the information center is +86 138002 10500.
I don't know Unicom. If the top one doesn't work
You can also call for free.
Mobile phone 10086 Unicom phone 100 10 ask them for the center number.