Mobile Entree 3.0 includes an HTML5 framework allowing users to take the Mobile Entree Base application, as well as custom applications, offline.  This means that the web app will be installed locally using HTML5 local caching in conjunction with the Web SQL storage in iOS and Android devices.  There are 2 places where this capability is turned on and off, in Central Administration and at the Web level.

Step 1: Enable Offline Access for a Web App SharePoint Web Application in Central Administration

1. Browse to Central Administration and in the quick launch click Mobile Entree
2. Under Configuration click on Manage Cache Settings
3. For each URL you want to allow Offline apps, check the box under Allow Offline Applications
4. Click Apply Changes
5. Reset IIS

Step 2: Enable Offline Access for a Mobile Application Instance

1. On a site that has the Mobile Entree Base feature activated and configured, browse to Site Actions > Mobile Entree Configuration
2. Select the Mobile Application you want to make available offline
3. Under Properties & Targeting, check the box labeled Allow Take Offline
4. Save Settings

Note: Mobile Entree supports offline access to only one of its out-of-the-box applications, the Mobile Entree Base application.  Custom applications have to be built specifically using the new methods for offline app development in order for them to be take offline..