long press

or long·press


(on a tablet or smartphone) the act of pressing one's finger down on an icon or other part of the screen for several seconds, as to activate a task or access additional options.

verb (used with or without object)

to press one's finger down for several seconds on (a part of a display screen): to long press the home button; to long press on the app icon.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019