Apple and Samsung had been partner for a long time. Some iPods and iPhone, iPhone 3G, 3GS use Samsung arm processor. Apple A4 to A7 is made by Samsung too. But

Apple and Samsung had been partner for a long time. Some iPods and iPhone, iPhone 3G, 3GS use Samsung arm processor. Apple A4 to A7 is made by Samsung too. But A8 is made by TSMC, A9 has two versions, APL0898 by Samsung, APL1022 by TSMC. There were some debates on which one is better. After that, all Ax process are made by TSMC.