iOS 7.1 is packed with interface refinements, bug fixes, improvements, and new features. Apple CarPlay introduces a better way to use iPhone while driving. And you can now control exactly how long Siri listens and more. Getting the update is easy. Go to Settings. Select General. And tap Software Update.

CarPlay, improved calendar, improved fingerprint detection, updated design, improved performance for iPhone 4 users and several additional updated and improvements. The size of the download varies depending on what device you’re using, but you’ll need a couple of free gigabytes.