A few tips for using your smartphone when traveling:

• As you head into the terminal, take a quick picture identifying the location of your car in the parking garage. This avoids aimless wandering on the back end of the trip, when you’re inevitably exhausted.
• Take a screen shot of your mobile boarding pass and (temporarily) make it your home screen. No more struggling to unlock a passcode and pull up an email at security.
• Download your airline’s app, which is usually free. I often fly Delta, and they have a great mobile app that allows you to check-in and tells you gate information and flight status.

Please share other great tips if you have them!