Apple will have limited iPhone Duo units available in stores on Friday

Apple said on Wednesday that stores will have only limited iPhone Duo stock for walk-in buyers when the folding phone launches on Friday. Business Recorder reported that online orders placed at the start of sales were exhausted within minutes, leaving some customers with delivery estimates as late as January.

The company introduced its first foldable iPhone in September, entering a niche already served by Samsung Electronics and Huawei Technologies. Analysts cited in the report expect the product’s close-fitting hinge to make large-scale production more difficult than for standard iPhones, while Apple says walk-in availability will differ by country. In several markets, including China, Japan and India, units will be reserved for customers who ordered online.