What does wps cloud service mean by binding mobile phones?

After the wps cloud service binds the mobile phone, it can synchronize the mobile phone and the computer.

Both the mobile phone and the computer log in to the same account. The mobile phone found me in the lower right and turned it on. Find the wps cloud and click on it. Turn on document cloud synchronization.

Binding the mobile phone number is to associate the application account with the mobile phone number, so that it is easier to confirm the identity when logging in to the application and enjoy other services such as SMS verification code.