With less than six weeks until the expected debut of the ‌iPhone 18 Pro‌ and the first foldable iPhone, widely rumored to be called the "iPhone Ultra," assemblers are working with Apple to hurry DRAM shipments, Culpan reports. Apple leans heavily on Micron for the memory but also buys from SK Hynix and Samsung. The bottleneck apparently threatens to ripple into the final stages of iPhone production. Assemblers have reportedly been told that Apple plans to build around 200 million units combined across the iPhone 18, ‌iPhone 18 Pro‌, and ‌iPhone Ultra‌ over their lifetimes, with the Ultra accounting for less than 10% of that total. The foldable iPhone will likely cost more than $2,000, making it the most expensive iPhone Apple has ever sold.