Apple's flagship iPhone X has been a tremendous seller. It managed to take up to 35 % of smartphone profits in Q4 2017 according to a CNBC report based on the Counterpoint Research numbers.
"According to the latest research from Counterpoint’s Q4 2017, the premium smartphone market did not grow as expected while Apple remained the most profitable brand, capturing 86% of the total handset market profits […]
The iPhone X alone generated 21% of total industry revenue and 35% of total industry profits during the quarter." This means the iPhone X, one of three new models from Apple in 2017, generated 5 times as much as 600 Android brands and a total of 35% off overall smartphone sales in the busiest quarter for devices.
Source:9to5Mac