Abstract: An electronic device displays a messaging user interface on the display, the messaging user interface including a conversation transcript of a messaging session between a user of the electronic device and at least one other user. The device receives a first message within the messaging session from an electronic device that corresponds to another user included in the messaging session; in response to receiving the first message, the device displays the first message in a first message region in the conversation transcript on the display. The device detects a first input by a first contact at a location on the touch-sensitive surface that corresponds to a location of the first message region in the conversation transcript; in response to detecting the first input, the device displays an acknowledgement selection affordance at a location in the messaging interface that corresponds to the first message region. The acknowledgement selection affordance displays a plurality of acknowledgement options.

Abstract: An electronic device displays a messaging user interface of a messaging application, including a conversation transcript of a messaging session between a user of the electronic device and at least one other user, and an application affordance. While displaying the messaging user interface, the device detects an input that activates the application affordance. In response to detecting the input that activates the application affordance, the device concurrently displays a launch icon for an application store and a plurality of launch icons for interactive applications. The device detects an input that activates the launch icon for the application store; in response to detecting the input that activates the launch icon for the application store: the device ceases to display the messaging user interface, and displays an application store user interface, including display of at least one interactive application available for download to the electronic device.

Abstract: An electronic device displays a messaging user interface on the display, the messaging user interface including a conversation transcript of a messaging session between a user of the electronic device and at least one other user. The device receives a first message within the messaging session from an electronic device that corresponds to another user included in the messaging session; in response to receiving the first message, the device displays the first message in a first message region in the conversation transcript on the display. The device detects a first input by a first contact at a location on the touch-sensitive surface that corresponds to a location of the first message region in the conversation transcript; in response to detecting the first input, the device displays an acknowledgement selection affordance at a location in the messaging interface that corresponds to the first message region. The acknowledgement selection affordance displays a plurality of acknowledgement options.

Abstract: An electronic device displays a messaging interface. The messaging user interface includes a search affordance and a conversation between a user of the device and another user. While displaying the messaging interface, the device detects activation of the search affordance. In response, the device ceases displaying the messaging interface and displays a search interface. The search user interface includes a search field and categorized content items. The categorized content items include a content item stored on the device and a content item from the Internet. While displaying the search interface, the device detects selection of a first item in the categorized content items; and, afterwards, displays the first item in the conversation. The device transmits the first item to the device that corresponds to the other user in the messaging session. The other user's device displays the item in a conversation that corresponds to the messaging session.

Abstract: An electronic device displays a messaging user interface of a messaging application on the display, the messaging user interface including a conversation transcript of a messaging session between a user of the electronic device and at least one other user, a first message-input area, and a launch icon for an interactive application. While displaying the messaging user interface, the device detects an input that activates the launch icon for the interactive application. In response to detecting the input that activates the launch icon for the interactive application, the device displays a user interface for the interactive application, the interactive application user interface including a second message-input area that is distinct from the first message-input area. While displaying the interactive application user interface, the device detects input of a first message in the second message-input area.

Abstract: An electronic device displays a messaging user interface on the display, the messaging user interface including a conversation transcript of a messaging session between a user of the electronic device and at least one other user. The device receives a first message within the messaging session from an electronic device that corresponds to another user included in the messaging session; in response to receiving the first message, the device displays the first message in a first message region in the conversation transcript on the display. The device detects a first input by a first contact at a location on the touch-sensitive surface that corresponds to a location of the first message region in the conversation transcript; in response to detecting the first input, the device displays an acknowledgement selection affordance at a location in the messaging interface that corresponds to the first message region. The acknowledgement selection affordance displays a plurality of acknowledgement options.

Abstract: The device displays a messaging user interface on a display, the messaging user interface including a conversation transcript, a plurality of electronic stickers, and a message-input area. While displaying the messaging user interface, the device detects a first user input while a focus selector is at a first location in the messaging user interface that corresponds to a first electronic sticker in the plurality of electronic stickers. In response, the device places and displays the first electronic sticker in the conversation transcript. While the first electronic sticker is displayed in the conversation transcript: the device detects a second user input while a focus selector is at a second location in the messaging user interface that corresponds to the first electronic sticker in the conversation transcript. In response, the device changes the position, size, and/or rotation of the first electronic sticker in the conversation transcript.

Abstract: An electronic device displays a messaging user interface on a display, the messaging user interface including a conversation transcript of a messaging session between a user of the electronic device and at least one other user, a keyboard, a message-input area, and a digital image affordance. While displaying the messaging user interface, the device detects an input that activates the digital image affordance. In response, the device replaces display of the keyboard with display of a plurality of digital images, the plurality of digital images including one or more digital images stored in memory and a live preview image from a digital camera. The device detects an input that selects the live image displayed within the plurality of digital images. In response, the device captures a digital image with the digital camera, while maintaining display of the conversation transcript.

Abstract: An electronic device displays a messaging user interface of a messaging application on the display, the messaging user interface including a conversation transcript of a messaging session between a user of the electronic device and at least one other user, a message-input area, and an icon for an interactive application that is displayed within the conversation transcript. While displaying the messaging user interface, the device detects an input that activates the icon for the interactive application; in response to detecting the input that activates the icon for the interactive application, the device displays a user interface for the interactive application in a first state.

Abstract: An electronic device displays a messaging user interface on the display, the messaging user interface including: a conversation transcript of a messaging session between a user of the electronic device and at least one other user, and a message-input area that includes a first message input. While displaying the messaging user interface, the device detects a first input by a first contact at a location on the touch-sensitive surface that corresponds to a location in the message-input area; in response to detecting the first input by the first contact, the device display an impact selection interface that includes a plurality of impact effect options.