Does China Unicom have SMS receipt service?

If you refer to the short message receipt service of Hubei Unicom, users of Hubei Unicom's 2/3G mobile phones (including Hou and OCS) can be opened, and this function can be used for local and domestic roaming, and the function fee is 3 yuan/month. You can handle SMS receipt business in the following ways: 1) Send "DXHUIZHI", "KTDXHUIZHI", "SMS receipt" and "SMS receipt" to 100 10. 2) Send "KT" to1065555559.