A method, comprising: at an electronic device with a display and a touch-sensitive surface: concurrently displaying a text entry area, a left side (5069-A) of a split keyboard, and a right side (5069-B) of a split keyboard, the left side of the split keyboard including a plurality of rows of keys and the right side of the split keyboard including a corresponding plurality of rows of keys; characterized by: detecting a gesture at a location on the touch-sensitive surface that corresponds to a predefined area adjacent to and to the right of a rightmost key in a respective row of the left side of the split keyboard; and, in response to detecting the gesture at the location on the touch-sensitive surface that corresponds to the predefined area adjacent to and to the right of the rightmost key in the respective row of the left side of the split keyboard, entering in the text entry area a character that corresponds to a leftmost key in a corresponding respective row of the right side of the split keyboard, wherein the predefined area adjacent to and to the right of the rightmost key in the respective row of the left side of the split keyboard is an undisplayed key activation area that corresponds to the leftmost key in the corresponding respective row of the right side of the split keyboard. concurrently displaying a text entry area, a left side (5069-A) of a split keyboard, and a right side (5069-B) of a split keyboard, the left side of the split keyboard including a plurality of rows of keys and the right side of the split keyboard including a corresponding plurality of rows of keys; a text entry area, a left side (5069-A) of a split keyboard, and a right side (5069-B) of a split keyboard, the left side of the split keyboard including a plurality of rows of keys and the right side of the split keyboard including a corresponding plurality of rows of keys; characterized by: detecting a gesture at a location on the touch-sensitive surface that corresponds to a predefined area adjacent to and to the right of a rightmost key in a respective row of the left side of the split keyboard; and, in response to detecting the gesture at the location on the touch-sensitive surface that corresponds to the predefined area adjacent to and to the right of the rightmost key in the respective row of the left side of the split keyboard, entering in the text entry area a character that corresponds to a leftmost key in a corresponding respective row of the right side of the split keyboard, wherein the predefined area adjacent to and to the right of the rightmost key in the respective row of the left side of the split keyboard is an undisplayed key activation area that corresponds to the leftmost key in the corresponding respective row of the right side of the split keyboard. detecting a gesture at a location on the touch-sensitive surface that corresponds to a predefined area adjacent to and to the right of a rightmost key in a respective row of the left side of the split keyboard; and, in response to detecting the gesture at the location on the touch-sensitive surface that corresponds to the predefined area adjacent to and to the right of the rightmost key in the respective row of the left side of the split keyboard, entering in the text entry area a character that corresponds to a leftmost key in a corresponding respective row of the right side of the split keyboard, wherein the predefined area adjacent to and to the right of the rightmost key in the respective row of the left side of the split keyboard is an undisplayed key activation area that corresponds to the leftmost key in the corresponding respective row of the right side of the split keyboard.