Representational Image of iOS. Apple recently announced WWDC 2021, which will see the introduction of iOS 15, along with the next-gen macOS, tvOS, watchOS, and iPadOS. Amidst the various rumours on how iOS 15 will be like, a recent one suggests throws light on the possible changes the Apple OS might get. Also Read - Apple starts rejecting apps using device fingerprinting to track users iOS 15 leak hints at design changes Apple is expected to change the way Control Centre appears on an iPhone. As suggested by a report by Control Centre on macOS Big Sur. If this happens, iPhones with iOS 15 are likely to get labelled and coloured Wi-Fi, Bluetooth and AirDrop icons. There could be a horizontal slider to increase/decrease the screen brightness and volume, much like it is seen on Android.