The manufacturer behind Apple's flagship device has revealed it is experiencing 'design related difficulties' producing the new iPhone.
As a result, stock of the iPhone has become severely delayed with some customers having to wait up to three weeks before receiving the device.
Foxconn chairman, Terry Gou, addressed the production issues this week, stating: "Market demand is very strong, but we just can't really fulfil Apple's requests."
"It's not easy to make the iPhones. We are falling short of meeting the huge demand," Gou continued.
These are not the first issues surrounding Foxconn's iPhone production to be made public, as delays have also been attributed to quality control issues over design defects and scratches, whilst protests and riots amongst the firm's 1.3 million workers have limited production even further.
However, despite looming supply issues, analysts have predicted that Apple can expect to sell around 46.5 million iPhone 5 devices during Q4 2012 and across the Christmas period.
The iPhone 5 has seen universal success as the new device sold over five million units in just its first weekend, which significantly outperformed both the 4 and 4S devices.
Foxconn recently revealed that it was considering expansion into the USA, eyeing-up cities such as Detroit and Los Angeles as potential manufacturing sites, however, given the complexity of the iPhone 5 production, it's believed that these new plants would only manufacture LCD televisions.
Want to receive up-to-the-minute tech news straight to your inbox? Then click here to sign up for the completely free PCR Daily Digest and Newsflash email services. You can also follow PCR on Twitter and Facebook.