Although Apple is not allowing U.S. residents to preorder the iPhone 5s, interested buyers in China were able to place a reservation for the new phone starting on September 17th. In order to reserve an iPhone 5s, China residents had to text a local number set up by Apple, and then they would receive a confirmation number confirming the reservation. That number could then be used on Apple’s site to choose a phone. Perhaps unsurprisingly, every model of the 5s appears to be sold out at almost every Apple Store in China already, both on contract and off. Sina Tech reports that the gold 5s was the first to go out of stock. This might signal a similar trend once the phone launches around the world on September 20th.