When using the mobile LastPass app, the user interface should be the same as /consistent with the desktop's. The dropdown sort options. the ability to collapse all folders to get folder list should work the same and be as easy as it is on the desktop version. Missing from the sort options on mobile that is in the drop down for desktop is the Most Recent option. Make this available on mobile version.
Suggestion then is to make the user interface and operation the same on a mobile device as it is on the desktop version. Application consistency is a standard user requirement in any application.