In some embodiments, a first electronic device displays a first user interface, where the first user interface is not a user interface of an application for controlling a second electronic device. The first electronic device receives, from the second electronic device, an indication that text input is needed for a text input user interface displayed on a separate display device of the second electronic device. In response, the first electronic device displays a text input alert on a display of the first electronic device, and receives an input interacting with the text input alert and entry of one or more text characters. In response, the first electronic device transmits, to the second electronic device, information that enables the one or more text characters to be provided as text input for the text input user interface displayed on the separate display device.