USA Today has a list of excellent tips on how to prepare your smartphone for disaster conditions.
If you’re preparing for a hurricane, your survival plan should include your smartphone. But you’ll want to do a few things in advance to make sure it will work, and actually be helpful in an emergency. And it’s a good time to remember: you won’t be able to rely on your mobile device for everything.
The author’s checklist is impeccable.
Check It Out: Prepare Your iPhone for Hurricane Conditions