1. An electronic device, comprising: a display; a touch-sensitive surface; one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: displaying a first keyboard on the display, the first keyboard comprising a first plurality of keys; detecting a key activation gesture at a first time at a location on the touch-sensitive surface that corresponds to a location of a first key in the first keyboard; in response to detecting the key activation gesture at the first time, activating the first key; detecting one or more contacts on the touch-sensitive surface at a second time after the first time, the one or more contacts corresponding to a keyboard selection gesture; and, in response to detecting the one or more contacts that correspond to the keyboard selection gesture at the second time after the first time: replacing the first keyboard with a second keyboard when the second time exceeds a predefined period of time after the first time; and maintaining display of the first keyboard when the second time is less than the predefined period of time after the first time.
1. An electronic device, comprising: a display; a touch-sensitive surface; one or more processors; memory; and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for: displaying a first keyboard on the display, the first keyboard comprising a first plurality of keys; detecting a key activation gesture at a first time at a location on the touch-sensitive surface that corresponds to a location of a first key in the first keyboard; in response to detecting the key activation gesture at the first time, activating the first key; detecting one or more contacts on the touch-sensitive surface at a second time after the first time, the one or more contacts corresponding to a keyboard selection gesture; and, in response to detecting the one or more contacts that correspond to the keyboard selection gesture at the second time after the first time: replacing the first keyboard with a second keyboard when the second time exceeds a predefined period of time after the first time; and maintaining display of the first keyboard when the second time is less than the predefined period of time after the first time. 6. The device of claim 1 , wherein replacing the first keyboard with the second keyboard includes displaying an animation that transitions the first keyboard to the second keyboard.