Just looking at Google maps on my Samsung s7 and it has an offline map option so you should be able to download the maps the same as on your tablet.

I have used the offline map in the past to try it (I have a grandfathered plan at a good price with unlimited data from my provider) but can't recall how accurate it is for current locations as I think it used free hot spots to update its location. But for a map to show the way from point a to point b it works.