Screen suppliers to Apple's iPhone 6 are scrambling to get enough screens ready for the new device as the need to redesign a key component disrupted panel production ahead of next month's expected launch, Reuters reported. The issue could delay the launch or limit the number of phones initially available to consumers as Apple readies larger-screen iPhones for the year-end shopping season amid market share loss to cheaper rivals.

Apple has scheduled a media event for Sept. 9, and many expect it to unveil the new iPhone 6 with both 4.7 inch and 5.5 inch screens - bigger than the 4-inch screen on the iPhone 5s and 5c.

Japan Display, Sharp and LG Display have been selected to make the iPhone 6 screens, according to sources.