Does the operator still have information after the port number transfer?

In this case, the operator will have information.

After the port number is transferred to the network, the user's number will not change, and the service provider will change, but the information of the previous operator will be retained.

After the network transfer is successful, the numbers and short messages in the original SIM card will be cleared and can be backed up in advance. The biggest problem of port number transfer is that the mobile phone cannot match the calling card of the telecom operator after the transfer. This problem is mainly presented on Apple mobile phones, such as mobile users who switch to telecommunications.