Apple A12

The Apple A12 Bionic is a 64-bit ARM-based system on a chip (SoC) designed by Apple Inc., part of the Apple silicon series, It first appeared in the iPhone XS and XS Max, iPhone XR, iPad Air (3rd generation), iPad Mini (5th generation), iPad (8th generation) and Apple TV 4K (2nd generation). Apple states that the two high-performance cores are 15% faster and 40% more energy-efficient than the Apple A11's, and the four high-efficiency cores use 50% less power than the A11's. It is the first mass-market system on a chip to be built using the 7 nm process. iOS 18, released in 2024, was the last major software update for the iPhone XS and XR. iPadOS 26, released in 2025, will be the last major software update for the iPad Mini (5th generation), iPad Air (3rd generation), and iPad (8th generation). tvOS support for the Apple TV 4K (2nd generation) is ongoing, with it supporting tvOS 27.