Apple has rolled out the iOS 9.2 beta update for the Apple iPhone 6 and iPhone 6 Plus last week shortly after the string of beta versions the tech giant released since the middle of September. The first update, the iOS 9.0, was immediately replaced with the iOS 9.0.1, which came with a small bug fixer.

The iOS 9.0.2 came a week after with additional bug fixers, only to be replaced by  the iOS 9.1, which is currently available for users of the iPhone 6 and iPhone 6 Plus.

The iOS 9.1 was found to be faulty, Forbes.com reports. iPhone users complained that their alarms did not go off, resulting to a torrent of outpour of sentiments in social media. Joey Santiago, lead guitarist for Pixies, tweeted about the incident in his Twitter account. A number of people said they missed their schedules and were late for flights because of the iOS 9.1 alarm bug.

While the new iOS 9.2 has shown few improvements in a number of areas, including faster user interface, observers have noticed some issues with the upgrade, as listed by Gotta Be Mobile.

Users are encouraged to check the iOS versions of their iPhone 6 and iPhone 6 Plus before downloading the updated OS. Gotta Be Mobile reports that once the iOS 9.2 is downloaded and installed, users can only downgrade back to iOS 9.1. While it is a not a major concern for users who already have their devices functioning on iOS 9.1, it can be a potential problem for those whose iPhones are working with older versions like the iOS 8.

A number of improvements found with the new iOS are for some of the lingering issues such as the bugs in the App Switcher, Dynamic WallPaper, iCloud Drive, Settings, and Spotlight Search. New features that came with the iOS 9.2 consist of new icons to Apple Music, Siri's Arabic Support, new extensions for Safari, and improvements to the App Switcher.