With OS X El Capitan releasing today, Apple has also updated iOS to version 9.0.2 with an over-the-air software update. This bug fix update marks the second release since iOS 9.0 launched earlier this month.
The update includes bug fixes and performance improvements for iCloud Backup, iMessage activation, Apple’s Podcasts app, and issues with cellular data usage. The release cycle suggests Apple is moving faster to ship small updates to address specific issues with iOS 9.
Apple publicly released iOS 9.0 on September 16th with multitasking features for iPad, transit directions in Maps, a feature-packed Notes app, an all-new News app, and many more features and improvements. Before the iPhone 6s and iPhone 6s Plus even hit stores, iOS 9.0.1 delivered quick fixes for setup assistance and alarm issues.
iOS 9.0.2 is a fairly small update at about 72MB so the update process should be somewhat quick for users.