Can port number transfer be handled in different places?

From 20 19, 12 and 13, cross-border application for network access and inter-provincial distribution are supported, and the number after carrying is the same as that of the original operator before carrying. Among them, Shandong, Guangdong, Hunan and Xinjiang provinces will not participate in the online transfer business for the time being, and they need to handle it in the business hall supported by their home countries. The online channels introduced are: Unicom mobile phone business hall, online business hall, Wangka assistant, and ant treasure card service number. For example, the number of a friend in Handan, Hebei, can apply for network transfer in Shanghai. After the transfer is successful, it will be the Unicom number of Handan, Hebei.