Following the devestating earthquake in Japan earlier this year, Apple has added a new early earthquake warning notification option to iOS 5. iOS 5 users in Japan can turn on early earthquake notifications at the very bottom of the iOS 5 Notification Center settings pane. As you can see above, all the user has to do is flick a switch to start receiving these notifications. According to Time, who profiled Japan’s earthquake warning system earlier this year, the system gives warnings from seconds to one or two minutes before the earthquake hits. Time also explains the history of the system:

Apple’s built-in earthquake notification system will be a nice replacement for those in Japan who rely on earthquake warning applications from the App Store such as Yurekuru Call. For those who cannot read the text above, it also warns that the feature may reduce your battery life because it is always connected to Japan’s earthquake warning system. This new notification options truly showcases Apple’s commitment to safety for those in Japan. Thanks, l9!