Explore by touch allows
HTC Desire 12+ to respond to shortcut gestures and screen touches with audible feedback.
Explore by touch is enabled when you turn on
Home screen, swipe up and then tap
TalkBack, and then tap
Under Navigation, tap the On/Off switch next to Explore by touch to turn the feature on or off.
When Explore by touch is disabled, HTC Desire 12+ will no longer respond to shortcut gestures or speak items when you touch the screen.