If wired ISP, use mobile data.
If mobile, use wired.
If they're both down for an extended period at once, then there are probably bigger things to worry about.
If mobile, use wired.
If they're both down for an extended period at once, then there are probably bigger things to worry about.
You can get Net access via sat link. Download is fine, upload is terrible. Expensive but that's what I'd do if money was no objection. If there is a service that gave you 'minutes' when down-time happened, that would be perfect for me. If you were 'serious', I'd investigate cubesats.
As Paul suggested a ham radio set is a good way to independently receive and send news from abroad. I think you can do TCP/IP over ham radio. http://www.ampr.org/
Depending on circumstance, a system of sneakernet with helpers can be effective. I used to 'browse' the web this way in the beginning when I didn't have a Net connection to the house.
If all of these proposals fail then you would have to setup your own internet infrastructure, make a meshnet. A local meshnet is easy. The trouble is at some point you have to connect to some backbone where Net access is available.
I was just thinking about microwave relays and lo', this appeared in my feed:
http://arstechnica.com/information-technology/2016/11/privat...