The option to reserve an iPhone Duo for Apple Store pickup is starting to return on Apple's online store, with the system live again in countries such as Australia , China , Japan , and South Korea . Unfortunately, our spot check revealed extremely limited availability right now, with few to no time slots available for all configurations. We only managed to find a single iPhone Duo unit available for Apple Store pickup in Australia on Saturday at the time we checked, as shown in the screenshot below, but it already disappeared by time we published this story. S. K. , and Singapore , Apple's online store continues to advise customers to check back on Saturday, October 24 in regards to Apple Store pickup, so we expect the reservation system to resume in additional countries as the clock rolls over to Saturday time zone by time zone. Just hours after iPhone Duo pre-orders began last Friday, Apple said demand for the device was " nothing short of extraordinary ," with delivery estimates pushing into late January, so it is not surprising that Apple Store pickup slots are hard to come by right now. " Apple Store pickup was briefly offered for a few minutes after iPhone Duo pre-orders began last Friday, but the option quickly disappeared. Given the scarcity, long queues formed at many Apple Stores around the world today, with some lucky customers managing to secure an iPhone Duo on a walk-in basis. If you were not so lucky, the Apple Store pickup tool may be your next best option, so keep an eye on the iPhone Duo order page over the next day or so and refresh often.