According to a study by Mackeeper, which the source refers to, many users of Apple products do not know how to do certain rather necessary and not the most complex actions with their devices.
For example, one of the most frequent requests from many users is how to back up data on iPhone. It was this query that was the main one in this segment for YouTube users from 32 US states.
Also, users are often looking for information on how to take a screenshot on the iPhone and how to "reset" the iPhone. The funny thing is that many people are looking for information on how to unlock iPhone. Most often, US users were looking for information on how to take a screenshot of the screen on the iPad.
As for Apple computers, here, too, most often users do not know how to take a screenshot, and also how to divide the display into two windows.