While an electronic device is connected to a first external device, display a first user interface including a first affordance. Detect an input selecting the first affordance. In response to detecting the input corresponding to selection of the first affordance, initiate a process to provide audio data concurrently with the first external device and a second external device different from the first external device. After initiating the process to provide audio data concurrently to the first external device and a second external device, detect an indication that a physical proximity between the electronic device and the second external device satisfies a proximity condition. In response to detecting the indication that the physical proximity between the electronic device and the second external device satisfies the proximity condition, display a second user interface indicating that the physical proximity between the electronic device and the second external device satisfies the proximity condition.