Supply chain leaked that because of the production issues of screens back light module and attaching, the shipment of 4.7-inch iPhone 6 will be downgraded from 16 million units to 13.5 million units.

Moreover, LGD and Sharp have delayed their production capacity to September, only JDI is all full speed in August plus the durable sapphire display feature, it is expected that the production capacity of 5.5-inch iPhone 6 OEM/ODM firm EMS will be delayed from September to October.

Securities firms considered that the Taiwanese supply chain of iPhone 6, including casing firm Catcher and assembler Wistron are in good prospect despite the downgrad of shipment upon its release.

MacRumors indicated that images of a completed logic board have suggested the 4.7-inch iPhone 6 will continue to offer 16GB of storage space at the low end, along with 1GB of RAM, support for NFC, and a Qualcomm MDM9625M LTE Modem that supports speeds of up to 150 Mbps.

When talking about the special display material Sapphire crystal, which is currently used for small iPhone elements like the camera lens and the home button of the iPhone 5s, has historically been prohibitively expensive to produce in larger quantities, but Apple has recently partnered with GT Advanced to ramp up sapphire production.

Current iPhones use Low Temperature Poly Silicon (LTPS) technology, and Apple is likely to continue using that technology for the iPhone 6.