Even before it launches on China Mobile this Friday, Apple’s(s aapl) iPhone looks to be a hit in a new market. According to China Mobile Chairman Xi Guohua, millions of iPhones have been ordered prior to the phone’s availability. Xi made the comment at a media briefing on Wednesday, which included Apple CEO Tim Cook, according to the Wall Street Journal.

How big a deal is the new Apple relationship with China Mobile? The scale is staggering if you consider that Apple has been selling the iPhone already since 2007. You’d might expect few areas of large sales growth are still available at this point but China Mobile is the biggest of the big.

“As of this weekend we will be selling iPhones in more than 3,000 additional locations,” Cook said at the briefing. And if that figure doesn’t impress, perhaps this one will. China Mobile is the largest…