The world's first update to Android 4.1, also known as Jelly Bean, was pushed back by Vodafone Australia because the new iteration of the operating system wasn't up to the country's standards for emergency phone calls.
"We've just been advised that the roll-out the of Android 4.1 Jelly Bean update to Vodafone Australia customers has been delayed," the carrier said in a blog post. "At this stage, we don't have any further information on when the roll-out will resume, but as soon as we do, we'll let you know here on the blog."
Delays on software updates to mobile phones are common, and affect nearly every operating system. In most instances, the delays are the result of the carrier testing and approval process, which can be rigorous even for a software update. The Next Web noted that emergency calls are a big issues with software updates.
Vodafone customers are told to check back with the blog for further news on when the update will be rolled out. The Next Web noted that Vodafone Australia's Nexus S was scheduled to be the first device in the world to get the update before the delay.