Oh, and speaking of cell phones, I have found this thing extremely useful. In addition to my phone, I pack a folding lock, a battery charger and a protein bar in mine, and the touch screen works fine through the cover so you can control your apps during the ride. Great price if you need to buy a multiple:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I've found that the mechanical cell phone holders cost more and don't last very long.