There is no doubt that Samsung and TSMC have been competing in the advanced process, Apple's lucrative A9 processor contract after Apple in 2013 signed a multi-year deal with TSMC to supply A-series processors for Apple's iOS devices based on the MacRumors. It is said that TSMC took lead on the A8 chip, fabricating the SoC for both the iPhone 6 and 6 Plus. The company also reportedly landed the contract to produce Apple's A8X chip, which is found in the new iPad Air 2.

Moreover, Samsung head Kim Ki-nam last month confirmed the company would begin producing 14nm processors for Apple in a supply chain deal that will have a positive impact on Samsung's profits.

A report from last year also suggested TSMC would replace Samsung as Apple's lead chip supplier, but Samsung's technological progress with its 14nm process may have changed the situation and turning into favorable it.