❝ China customs officials have taken down smugglers who used drones to carry iPhones from Hong Kong into Shenzhen. They managed to transport 500 million yuan ($79.8 million) worth of refurbished iPhones before the operation was busted, according to Reuters.

The smugglers could move up to 15,000 iPhones each night, so they managed to get things running pretty efficiently.
https://www.theverge.com/2018/3/30/17180088/china-busts-iphone-drone-smugglers