The new software has been designed to make the iPhone appear bigger, with features crafted to take advantage of the entire screen.
Text is said to appear sharper, while a "control centre" on the phone allows users to adjust settings with just one swipe from the bottom of the screen.
This gives instant access to functions such as Airplane Mode, Wi-Fi, Bluetooth or Do Not Disturb, and enables users to quickly pause or play a song, jump to the next track and stream music.
Meanwhile a "notification centre" is available from the "lock" screen so users can view updates with a "simple swipe".
More top news
£90,000 found under a bed in derelict house, by firefighters about to set fire to it in a training exercise.
Sturgeon has rejected the idea of a SNP-Tory coalition, stating if Tories can't win majority 'they don't deserve to be the Government.'
Hit TV series Mad Men will soon air its final episodes, but the programme will continue in the National Museum of American History.