In 2016, Apple ditched the 3.5mm headphone jack when it introduced the iPhone 7. Apple called the move courageous, but we like to call it annoying. Along the way, it included a Lightning to headphone jack adapter in iPhone boxes to lessen the annoyance, but Apple is done holding our hands through the transition and may not include the dongle with future iPhone releases.
According to Barclays analyst Blayne Curtis, Apple may exclude the dongle from future iPhones. A specific reason for the exclusion was not provided, but it confirms a prediction made by a Barclays analysts last year.
“We believe [the adapter] stays this year  but goes away at some point, potentially in the 2018 model,” Barclays previously said.
That prediction seems to be dead on. Things could still change, but understanding how Apple operates, the move could be designed to encourage customers to purchase AirPods or Beats Bluetooth earphones. After all, eliminating the headphone jack from the iPhone skyrocketed interested in its own wireless headphones. Excluding the adapter would be the last step of the process into a wireless future.
Apple will still sell the Lightning to 3.5mm headphone jack separately for $9 if consumers so choose to go that route. However, the days of it coming with an iPhone may be coming to an end very soon.