I recently had to help my mother with some tech support. One of the things I needed to do was turn off the device - I had to actually Google how to turn off an

I recently had to help my mother with some tech support. One of the things I needed to do was turn off the device - I had to actually Google how to turn off an iPhone X. This is after me owning 3 generations of iPhone (3S-4S) and an iPad AND the family owning one of every main iPhone since 3S. Is turning off the device an advanced feature?