I find the following useful in your context.

The camera is pretty good and can be used to document things.

There's a gas app that gives you locations and prices of gas stations.

The built in maps app is very good.

As is Accuweather.

I also downloaded a knots book and a pain free book that shows various PT exercises for things that might ail you.

All that and the ability to call, email and text...assuming there is service.