Apple presents iOS 16

Apple unveils iOS 16 with revamped lock screen and big changes to iMessage.

Apple kicked off its annual developer conference by unveiling its next-generation mobile software, iOS 16, with new features that will let users personalize their iPhone lock screens, change how they text friends through iMessage and deepen how its smartphones integrate with cars.

Product updates are more multi-tasking features on Mac software, the introduction of Apple's Weather app on iPad and the unveiling of the company's next-generation M2 chip.

Perhaps the buzziest changes are coming to iMessage, including the ability to edit or unsend messages and to mark messages as unread. The company said these options are among the most requested features from users.

Apple also teased several new options to better customize the lock screen and improve the notifications experience. iPhone users will be able to add widgets on the lock screen to get information at a glance, such as upcoming calendar events and the weather, and track "live" activities, including an Uber ride's progress or updates on a sports game. And the software will offer more personalized wallpapers for the lock screen and the ability to shuffle options throughout the day.

Apple also unveiled a tool called Passkeys, which is intended to replace passwords by using Touch ID or Face ID to authenticate across apps and devices.