TSMC will begin volume production of 5nm-based A14 chips for iPhone 12 models in April, according to industry sources cited by DigiTimes. A-series chip production usually begins around April-May, so the process appears to be on schedule.

TSMC has been Apple's exclusive supplier of A-series chips since 2016, and its chips have gradually become smaller as it continues to refine its manufacturing process, benefitting performance, battery life, and thermal management on iPhones.

• A10 chip: 16nm

• A11 chip: 10nm

• A12 chip: 7nm

• A13 chip: 7nm+

• A14 chip: 5nm expected

Last year, TSMC announced a $25 billion investment in its new 5nm node technology in a bid to remain Apple's exclusive supplier of processors.

Apple plans to introduce four high-end iPhone 12 models with 5G support in the fall, including one 5.4-inch model, two 6.1-inch models, and one 6.7-inch model, according to analyst Ming-Chi Kuo. A new lower-end iPhone is also widely rumored to launch in the first half of 2020, but it is expected to have an A13 chip.

Source: Macrumors