Apple's iPhone availability checker shows the status as of store closing (9pm) only. Shipments arrive during the day and are sold that day. If they sell out the day they are received the checker will again show no stock.
So here's what to do. Find out from an Apple Store employee what time their shipments have been arriving. Be there at that time on the day you want to purchase.
So here's what to do. Find out from an Apple Store employee what time their shipments have been arriving. Be there at that time on the day you want to purchase.