iPhone Duo pre-orders open next month, and a new analyst report indicates the device could be in even shorter supply at launch than expected.

Following months of rumors about Apple's first foldable iPhone, last week Apple unveiled the iPhone Duo. Unlike the iPhone 18 Pro and Pro Max, iPhone Duo won't ship in the typical September timeframe. Instead, pre-orders will open Friday, October 16 ahead of the first deliveries October 23.

We've seen reports before saying that supply could be very constrained. And the latest update from analyst Jeff Pu adds further corroboration to that claim. In a research note seen by 9to5Mac, Pu writes that iPhone Duo units shipped in 2026 are now expected to be only 6 million, down from his previous 7 million estimate. The reason isn't a lack of demand, but rather "hinge constraints" that are causing production slowdowns. For context, Pu estimates 72 million iPhone 18 Pro and Pro Max models will ship by the end of the year—about 12x the iPhone Duo estimate. So if you're hoping to get an iPhone Duo at launch, it might be quite the challenge despite having the highest-ever $1,999 starting price for an iPhone.

Are you planning to buy an iPhone Duo? Why or why not? Let us know in the comments.