A worker from Lens' quality control department has allegedly admitted that the company's screen-printing workshop may currently be dealing with some issues with the white iPhone 4 covers. Specifically, the factory's still working out the perfect combination of paint thickness and opacity -- the former to ensure the next sub-contractor has enough clearance for the digitizer overlay, and the latter for the absolute whiteness that Jony Ive and co. strive for.
There have also been concerns about Lens' production capacity.
According to industry sources, Lens' current production capacity only meets half of Apple's demand, thus becoming a major bottleneck for the entire iPhone 4 production pipeline.
Apple has indicated the white iPhone should be available in limited quantities by the end of the month.