I like carrying a copy of my forum ride routes on my phone. My old Garmin GPS has not let me down yet, but it does not have maps on it which means that I have to stick to the route I plotted or roads that I know. Having a Landranger-scale OS map of the whole of mainland Britain on my phone is a brilliant backup and will allow me to make up alternative routes out on the road!
I was forced to do a major detour once on a 140 mile ride. Fortunately, I knew a different way back because the diversion sign was a fat lot of good - "
Snake Pass closed - please take an alternative route"!
Here is a photo of my laptop, phone, and tablet showing part of the route we took on my forum ride on Saturday ...
The one thing I am not so chuffed about is that the Android app does not allow me to display an elevation profile of a route, the way that I can on my PCs. I thought I would be able to get away with just taking my tablet with me on cycling holidays but I like being able to check the hilliness of new routes before I ride them. I know how contour lines work so I can get an idea from the maps, but a graph makes things much clearer.