Android Airplane modeNow that we've got music, games, videos and photos on our phones, we're definitely going to want to have access to our phones while traveling, right? But if you're even going to think about using your phone on an airplane, you're going to need the aptly named "Airplane mode." It shuts down the phone's radios so that it won't interfere with any of the airplane's systems.

To activate airplane mode, hold down the power button and tap the appropriate button. Or, your phone may have an airplane mode widget, like you see above. You'll still need to follow crew members' instructions during takeoff and landing, however, and we wouldn't recommend fighting back with "But, it's in airplane mode!"