A rumour circulating around the Chinese language press on Tuesday suggests that Apple has contracted Taiwanese manufacturer Quanta Computer to build the second generation iPhone. Quanta, which mostly makes laptops but also builds an XDA PDA for O2 and the iPaq for HP, is reportedly gearing up for a run of 5 million iPhones in September. Quanta recently made headlines when it was reported that the company has been tapped to build Windows-based mobile phones for Dell.But secrecy is the name of this game. Apple has still not confirmed which company is making the first generation iPhone. Reports began circulating in November that Hon Hai Precision, the Taiwanese manufacturer also known as Foxconn, had received an order for 12 million mobile phone units from Apple. Foxconn manufactures Apple’s popular iPod music player.Nevertheless, all will be revealed soon, the iPhone will launch on AT&T’s US network in a matter of weeks.