No matter how pumped you might be to gain access to the latest bells and whistles Apple's packed into iOS 10, there never seems to be a convenient time to quit what you're doing to install it. Going phoneless midday for half an hour while it goes through the reboot? The horror!
Apple, to its credit, understands this and gives you the option to have it automatically install while your phone charges overnight. Pretty damn convenient, eh? Except updating overnight can massively screw you over come morning. That's because running an overnight update could disable your phone's alarm clock.