Some users of devices with 64 and 128 GB storage capacities have reportedly complained about sudden crashes that lead to the inability to use their smartphones.
It seems that these problems are generally encountered on devices with an overflow of applications.
According to Business Korea, Apple plans to change the TLC (triple-level cell) NAND flash memory with the MLC (multi-level cell) NAND flash in order to avoid further dysfunction.
On the TLC NAND flash the memory cell can store three bits of data per flash cell. This is a bit slower but less expensive to produce.
Cupertino will reportedly be using multi-level cell NAND in the 64GB and 128GB models, while existing units will be fixed with the future iOS 8.1.1 update.
According to AppleInsider, a source with ties to the company claims that problems relate to large capacity iPhone 6 models are extremely rare, and that there are no plans to recall the phones, nor is there any defect in the Anobit components of the specified iPhone 6 versions.
The site also noted that a future iOS update might deal with the issue but no exact date can be put forward as to when this will happen.