Gestures are used to navigate between screens, start and stop apps, zoom in and out of photos, and more.
Some swipes start from the edge of the screen, others from the middle area. For instance, to open Notifications, swipe a finger from the top edge down. To open the All apps list from the Home screen, swipe up beginning from the middle area of the screen. To open recent apps (from any screen), swipe up from the bottom edge.
The touchscreen responds to the touch of your skin on the glass surface. You do not need to use pressure, just a light touch. Some individuals have dry skin, a condition that can also come with aging. If your screen doesn’t respond well to your touch, using lotion or a stylus may help.