The iPhone X, 8 and 8 Plus share of all iPhones sold is worse than their predecessors
We just had a research firm show a historically low level of interest in Apple's newest iPhones at AT&T, Verizon, or Sprint, and now a consumer study comes to reiterate that fact, again for the US. The iPhone 8, 8 Plus, and iPhone X have reportedly represented 61% of all iPhone sales in America last quarter, which is much lower than the 72% that the iPhone 7 and 7 Plus commanded before them.
Granted, the iPhone X was quite late to the party, but it seems that people were waiting for it, instead of grabbing the other two, more legacy-oriented iPhones, which resulted in the comparatively slower uptake of Apple's newest darlings.
Those same iPhone 7 and 7 Plus accounted for about 25% of iPhone sales in Q4, followed by the 6s and 6s Plus with 8% share, and rounding up the difference was the lowly iPhone SE. The all-important iPhone X made roughly 20% of all iPhones that Apple sold in the October-December period, which means a pretty strong initial demand, but also that the other new iPhones didn't fair as well as they should, or as Apple has been accustomed to.