Identify tablets or mobile traffic in free version

Lite data file only allows to distinguish between Mobile and Non-Mobile devices. However if you have Premium data, then you can create one rule for the IsTablet property and another rule for the IsMobile property which should achieve exactly what you want.

Lite data also contains screen width and height property for mobile devices. It is possible to set up a rule based on screen size parameters, although less exact, it will allow to redirect at least part of the Tablet users.