Why is Apple reminded when it doesn't have the Internet?

When there is a network, the prompt has been received, but it has not been opened yet, and then he will always display the reminder.

Or the software reminder is not carried out through the network, it may be that the software has a built-in reminder that will automatically remind you after reaching the set purpose, or it may be reminded by SMS and other functions.

It is also possible that you opened the internet to find your own connection, didn't open the internet, and then found out if there was a password wifi nearby, and then you lost face and automatically collected information, but this possibility is relatively small.