Zte MF633PLUS Manual page 27

There is no need to change these settings as they are pre-
configured for your network. If you change networks or are
roaming you may need to modify some settings. Consult
your service provider for more information.
New Connection for Corporate Users and IT Administrators
If you have a private VPN you will need to create a new
connection configuration. This feature is designed for IT
Administrators in a corporate environment and is generally
not required to be changed by end users.
Add
Delete
Edit
Set Default
Add new configuration files
Delete the selected configuration file
Edit the selected configuration file
Set the selected profile as
your default connection
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