Generally speaking you don\’t want to rely on technology at all in your disaster toolkit, but that doesn\’t mean you can\’t make use of an old smartphone (or your current one for that matter). Before the cell networks are down, here\’s what you should load up on your smartphone.P
We\’ve talked about various disaster kits you need to have in the house and any good disaster kit is enough to get you through at least 72 hours without power, food, or water. Those certainly cover your basic survival needs, but if you need guides for living on your own, a backup of data, or anything similar, you can also turn to your smartphone.
via How to Use Your Smartphone As an Essential Part of Your Disaster Kit.