The iPhone XS isn’t doing too well.
As Forbes reports, Apple has slowed down production on all three of its newest mobile devices because of low demand. Additionally, the iPhone X makes use of cheaper manufacturing equipment making it much easier to produce than the others. The iPhone X was originally removed from in-store displays with the arrival of the lower-end iPhone XR, but even that option is struggling as buyers flock to the iPhone 8 model instead, which is currently cheaper than the XR.
While Apple has made the decision to no longer report sales, factors such as these indicate nothing but downward trends in iPhone sales, which continue to experience increasing retail prices with each new model. When users can hardly tell the difference between the X and XS models, save for trivial interface changes, it only make sense that they would opt for the cheaper previous model.