Apple currently uses the in-cell touch technology which was first introduced in the iPhone 5. This gave capability to make thinner display by merging the display and the touch sensor into one panel, this caused the supply chain problems.
Now The China Times has reported that Apple has planned to switch over to a new technology called the ‘Touch-On-Display’ . This technology is said to provide better touch experience when compared to the previous one. There are rumors that Apple would be buying these panels from Chimei Innolux.