However according to a report from CIRP, it could be something else instead. According to their report which breaks down the number of iPhones sold, it seems that the iPhone X accounts for about 30% of iPhones sold in 2017, whereas the iPhone 8 and 8 Plus accounted for 40%, indicating that despite initial reports, these phones are selling better than the iPhone X.
CIRP’s report is based on sales 30 days following the launch of the iPhone X, which could suggest that perhaps consumers weren’t that impressed with the iPhone X and decided to opt for the cheaper iPhone 8 and 8 Plus handsets instead. Interestingly enough the breakdown also suggests that at least as far as the iPhone 7 and 7 Plus are concerned, the smaller iPhone 7 is considerably more popular than the Plus model both in 2016 and 2017.
Note that these figures aren’t 100% official as Apple has yet to disclose them, so take it with a grain of salt for now.