Apple is urging anyone with an iPhone to update their device with the latest software - which is said to fix a number of known bugs and glitches.
The updates have also been rolled out on iPads, Mac PC's and laptops, Apple TV, Watches and HomePods.
The new iOS (operating system) fixes a number of bugs and security loopholes - and device owners are being asked to update them immediately to receive a more secure and enjoyable experience.