The iPhone X has not been one of Apple's best-selling iPhone models in recent years. In fact, Apple is not selling as many shipments as analysts have predicted. While a number of 20-30 million units was estimated for Q1, Ming-Chi Kuo has given a new estimated number of 18 million unit shipments. KGI cited a couple of reasons that the iPhone X didn't do as well. Analysts were counting on the Chinese market to make up these numbers, but a longer smartphone cycle for Chinese phone users' and the belief that the iPhone X's notched-display did not provide as much usable area as a 5.5-inch...
Source: https://www.gsmarena.com/kgi_18_million_apple_iphone_x_units_will_ship_in_q1_-news-29242.php