On my Samsung Galaxy Tab (8 inch tablet) I see the map scale to the right of the scale change +/- buttons, and at the top of the planning screen I see the distance and time for the planned flight. I do not see either on my Samsung Galaxy S6 phone. Both are running 3.5.0.19917. The map display on the phone needs a display of the current scale, am I missing an option to turn it on?

We don't always draw the same things on phones as we do on tablets, because there simply isn't as much room on the former.

OK, but please find a way to display the scale on a phone - it only needs a number by the zoom buttons to be useful.