It appears that Apple is discontinuing the Lightning to 3.5mm headphone jack adapter that it released alongside the iPhone 7 and iPhone 7 Plus ...
Users who haven't got around to buying Apple's short Lightning to 3.5mm headphone jack adapter after eight years are now out of luck, as the iPhone 7 accessory appears to be discontinued.
Apple's iPhone 7 has no headphone jack. Instead, Apple wants people to use its proprietary Lightning connector to attach headphones. Or, better yet, to buy Apple's new $160 wireless AirPods.