I can understand why that'd happen. Where I live, in France atm, there's <i>one</i> cell tower around. And when it's down, it's down. I know because in June there have been one hour of electrical blackout about once a week and, well, our smartphones weren't working anymore. I don't even bother with an UPS or a 4G router for my network: when there's no electricity, nothing is working anymore anyway.<p>Stuff that keeps working for a few hours: the Kindle, tablet and local files on the laptops. So there's that.