Benchmark atlases or ???? Hiking trails on something else?

We really like iHikegps, which is an app for your phone. It works without cell coverage, as long as you have pre-loaded the USGS topo maps when you do have coverage.

We use it primarily for hiking and for forest road navigation. When we are driving on pavement, we usually use Google Maps, because there is usually cell coverage.

The iHike app is very easy to install and use. And the maps are very easy to read, much better than on our earlier Garmin devices.