In almost any other case, on almost any other phone, the loss of the headphone jack would be a deal-breaker, even with the excellent changes to other parts of the phone. But this is the iPhone, and with iOS, Apple has built an overall ecosystem that's hard to leave. So potential buyers have to think, first and foremost, about whether it will be more annoying to switch over to an Android phone with a port, or to have to use an adaptor on planes and in cars over the next few years. For some, the loss of the headphone jack may make it feel like Apple made the iPhone actively worse.
