Apple is allowing customers to prepare their pre-orders for the upcoming iPhone Duo starting on October 12. According to 9to5Mac, users will be able to choose their preferred color, storage space, trade-in options, Apple Care warranty, and payment method via Apple's website. This information will be stored in the user's cart to save time on the official opening day of pre-orders, which is set for October 16 at 2 p.m. French time. The fastest users can hope to receive the iPhone Duo on the day of its official release, October 23. Apple is familiar with this pre-preorder principle, but it may take on particular importance for the iPhone Duo due to potential limited stock. Recent rumors relayed by MacRumors suggest that production lines for the foldable phone are currently only 60% reliable, with production of foldable screens and hinges slower than expected. According to sources who spoke to Chinese news outlet Jiemian News, Apple is aiming for 6 to 8 million units at launch, significantly below the 20 to 30 million units that the company stocks for classic iPhone launches. According to revelations from Jiemian News, Foxconn was struggling to reach 60% assembly yield in mid-September, hindered by Apple's requirements. The media estimates it would take between six months and a year to stabilize the production line. Samsung Display reportedly had setbacks on the hinge and foldable screens, slowing down component deliveries and causing mid-course hardware revisions. Additionally, the A20 Pro chip for the iPhone Duo and the iPhone 18 Pro would have difficulty leaving the factory, blocked by a shortage of memory. To maximize chances during pre-orders, Apple is relaunching its option "Prepare yourself" on the Apple Store app and its official website. From October 12 to October 15, buyers will be able to prepare their order there, with validation of these choices in advance eliminating any time loss at the moment. On October 16 at exactly 2 p.m., a single click on the order button will be enough to pay and complete the purchase. Those who are slower should, on the other hand, find delivery delays pushed back by several weeks. The iPhone Duo has a base price of 2339 euros and can go up to 3839 euros for the 2 To version.