I am another who uses my Samsung S5 in direct sunlight. I think the sunlight here at 7000ft is a bit brighter than down near sea level (at least a lot more UV). :) Yes, use auto brightness. I also mount mine so it is not 'flat' to my eyes. Angle it 'down' a little and the direct glare is not an issue. Reflected glare, like from a silver or yellow jacket, can make almost any device unreadable (including an instrument panel :) ). I also pick different color schemes to get the best contrast in direct sunlight. For my old Magellan unit it worked better in 'night' mode. And, yes, multiple backups is good. I also have a Garmin mounted next to my phone. And I do keep a map and compass around just cause that's how I did things 30 years ago. :) A Stelvio and complaining about electronics? I hope you have sealed up your computer on that thing :) Do you have a backup if it stops sparking? And there is nothing wrong with old bikes. Mine has even been 'modernized' with one of those newfangled ignition modules. But, I still carry a plate with the dual points in case the new bit of electronic wizardry goes belly up.