Power Buttons May Perform Similarly to the Solid-State Home Button That Was Initially Introduced on the iPhone 7.
The solid-state home button on the iPhone 8, as well as the second and third iterations of the cost-effective iPhone SE, is driven by Apple’s taptic engine
The haptic keyboard presses in iOS 16 and the Force Touch trackpads on Apple’s MacBooks both make use of the same technology.
The iPhone 15 would then have three Taptic engines instead of just one and power and volume buttons on these two versions may remain clicky.
Apple will need to add Taptic Engines to the left and right sides of the two high-end iPhone 15 models.
Even the new $799 Apple Watch Ultra still includes some physical toggles, despite the firm allegedly wanting to add a solid-state button to its Apple Watch in 2018.
The iPhone 15 won’t be released for about a year, there are still a lot of speculations floating about it.