You download & store the maps onto your phone's memory, no cell reception is required, unless you want to download maps while on the trail.not a great idea you have to have cell phone coverage
Looks great. What sort of mount is that on the iPad?I have Gaia on my iPhone 6, but it works so much better with my iPad Air 2. It makes navigating much easier. That's my old iPhone 4 next to it. The 6 isn't much bigger, so you get an idea of the size difference.