1. Advantages of port number transfer:

1. It can promote operators to optimize packages. After the full implementation of port number transfer, if the old users are not satisfied, they may choose to transfer to another operator. In order to maintain old users, operators will definitely increase the analysis of their needs, optimize old packages, make old users feel a sense of belonging, and reduce the gap between old users using packages and their own companies and competitors' new packages. Such as some packages of China Mobile.

2. It can promote operators to improve service quality. Call customer service and ignore it. Repeated calls can't solve the problem. In the past, there was no effective way for users to do this. Now, port number transfer gives users a sense of God, and operators will make greater efforts to improve service quality in order to reduce users' leaving the network.

3. It can promote operators to selectively optimize the network. If the network coverage of an operator in the user's area is poor, the user can transfer to another operator with better network coverage without changing the number. From the operator's point of view, in hot areas, the quality of network coverage becomes more important, while in marginal mountainous areas, if it is really uneconomical and the opponent has better coverage, these areas can be abandoned and users are advised to switch to other operators. It is also similar in some old communities or special areas.

Second, the disadvantages of port number transfer:

1. The signal coverage of operators may be different due to different regions, and the signal after network transfer may be different from the original operators;

2. In the process of network transfer, the mobile phone number can't be used normally;

3. sms channel will change after changing operators, and it is very likely that you will not receive short messages from British Airways card, WeChat, Alipay, etc.

4 can only be recharged by transferring to the operator's official APP and business hall.

port number transfer is to provide users with more consumption options. In the past, the market strategy of operators always revolved around two indicators: one is the time spent on the network, and the other is the ARPU value, that is, the average revenue per user. In order to pursue these two indicators, operators try their best to develop new users on the one hand, and try their best to maintain old users on the other hand, and even carry all kinds of "private goods" in the package design in order to increase the average income of each user. It can be said that every operator in China is a faithful believer in the marketing concept of "customer relationship management".