SharePlus provides the ability to cache SharePoint content locally in the device, allowing you to access your information even when not connected to the SharePoint server (offline). Later, when the connection to the SharePoint server is restored (online), SharePlus is responsible to synchronize your information again with the SharePoint server.
ONLINE – SharePlus has a working connection and can communicate with the SharePoint server.
OFFLINE – SharePlus can’t access the server and you can only access lists with Offline Support enabled.
You can enable the offline behavior for a list very easily, as shown below.
While navigating the site:
Open the the Action Overflow for the list you want to access without connection.
Select Keep Offline.
While navigating the list:
Open the the Action Overflow.
Select Keep Offline.
Once you choose Keep Offline, the list is added to the synchronization queue. You can access the list contents while offline only after the synchronization is finished and the information is cached locally.