You can use your iPhone or iPad (cellular modes) to provide a personal wifi connection during a power outage. This may come in handy if you can't use your home internet service and you want to connect a laptop or other battery powered device to the Internet via WIFI.
It's very simple to do!
1. Click on your Settings icon.
2. Locate the Personal Hotspot option.
3. Create a password for your Personal Wi-Fi Hotspot.
4. Turn on the feature.
5. Use your laptop or other device to connect to the new Wi-Fi signal you just created.
That's It! Enjoy!
Note: This shares your data package that you have with your cellular provider. It might be a good idea to contact your provider to verify your plan before streaming movies, music or downloading very large files.