Apple shifting production of its iPhone and iPad chips away from Samsung to TSMC is one of those constant rumors, dating back to at least 2011.
Taiwan-based Commercial Timessaid a trial with Apple was set to kick off in Q1 for the A6X chip, which didn’t happen. DigiTimes, a site not noted for its accuracy, regularly reports that Apple is shifting its chip production to TSMC, and claimed back in June that this would be the case for the A8 chip, saying that production would start in early 2014. Since we’re not expecting the iPhone 6 until the fall, it’s hard to see why this would be the case.
The WSJ reported back in June of this year that a deal had finally been struck, but big investments by Samsung in its new Austin, Texas plant suggest that multi-year contracts are likely in place, and The Korea Economic Daily is claiming that Samsung will still make 30-40 percent of the A8 processors in next year’s iPhone 6.
This is said to be TMSC experiencing difficulties (presumably yield rates) with its manufacture of 20nm chips. It was recently confirmed that the A7 chip in the iPhone 5s was made by Samsung.