Incorrect "Allow data roaming" setting is displayed for a mobile broadband connection in Windows 8

To check whether data roaming is allowed on a mobile broadband network, use the "View connection properties" pane. To do this, right-click the mobile broadband connection, click View connection properties, and then click the Profile tab. The Allow data roaming on this network check box displays the correct setting.

Note: If you manually disconnect from a network, the auto-connect and roaming options are cleared. This is by design since you chose to disconnect from the network.