The a15 is from TSMC.
To be precise, the a15 chip is a bionic chip with a 5-nanometer process commissioned by Apple to be manufactured by TSMC. The overall performance of the A15 will be improved by about 20% compared with the A14, and the energy efficiency ratio will continue to increase by 30%, with the focus still on improving the battery life. Upgrade directly to Qualcomm's latest X65 baseband, which uses Samsung's state-of-the-art 4nm process and can reduce power consumption by more than 30%. The a15 chip is currently the main chip in Apple's smart products.
It's made by TSMC. Semiconductor decided to prioritize orders to Apple A15 processors to ensure that the iPhone13 series can be released smoothly in September. Apple A15 uses the second generation of 5nm process, which is 5nm, performance compared to the previous generation increased by 20%, energy efficiency increased by 30%. From the point of view of the production process, the A15 upgrade is general, which can only be considered a normal upgrade.