The iPhone 5, which launched in China on Friday, will be available in more than 100 countries by the end of December.
The phone first went on sale on Sept. 21 in the U.S., Germany, France, Japan and five other countries, with more than 5 million sold in the first three days.
That also set a record, but it only beat last year's iPhone 4S launch by a small margin, falling short of some analysts' expectations. Apple shares hit an all-time high of $705.07 that day, but in the months since the stock has plunged about 28 per cent.
On Sunday, Citi analyst Glen Yeung cut his rating for the company to "Neutral" from "Buy," questioning the strength of iPhone 5 demand and saying that it's unlikely Apple shares will rally any time soon.
Apple Inc. shares fell $6.85 to $502.94 in premarket trading Monday.