A new report from BusinessKorea suggests that Apple may be planning to change the type of NAND flash chips it uses for the iPhone 6 and iPhone 6 Plus, following reports of various users problems with higher-capacity models. Citing industry sources, the report states that Apple has decided to discontinue use of triple-level-cell (TLC) NAND as it believes the NAND controller IC contained in the chips to be the cause of recent problems with the 128GB…