Touchscreen smartphones allow a variety of operations to be performed by users, both single and multitouch. Multitouch gestures refer to touchscreen input that uses two or more fingers at a time. The following is a list of the most common touch-based operations available with Apple, Android, and Windows Phone devices.
Touch the screen with one finger, once. This is the fundamental operation required to type text messages and notes, and to launch applications.
Tap the screen twice, with one finger. This is usually done to select a piece of text to edit it.
Press the screen with one finger, and hold. ...