Suppliers for Apple's iPhone 6 are rushing to make sure they have enough screens ready for the device, as a redesign has interrupted production, according to a Reuters report.

It has yet to be determined if the screen shortage will force Apple to push back next month's release date or if it just means that fewer phones will be available upon the initial release.

Apple reportedly has planned a media event to announce the iPhone 6 on Sept. 9, where the company is expected to reveal two sizes of the new device: a 4.7-inch screen and a 5.5-inch screen. The California-based company has not confirmed that date.

If Apple does unveil the iPhone 6 on Sept. 9, the company's history suggests that the phone would be released to the public on the following Friday, which would be Sept. 19.

The supply-chain snafu occurred because, in an effort to make the iPhone 6 thinner than any previous version, Apple wanted to use just one layer of backlight film. The standard has been two layers of the film and the single layer did not provide enough light.

The backlight returned to the design table to fix the brightness issue, putting screen assembly on hold for part of June and July.

Screen assembly and production has resumed and the suppliers are working around the clock to catch up. Those companies are Japan Display Inc., Sharp Corp. and LG Display Co., none of which commented on the delay.

Apple has been known to be demanding of its suppliers in its effort to create innovative products that justify premium prices.

Prior to the issue with screens on the iPhone 6, a number of rumored problems surfaced, but mainly about the 5.5-inch model, according to AppleInsider. Those reports indicated the 5.5-inch version would be released later than the 4.7-inch model, but those issues seem to have been resolved.