If this is the first time trying to connect, make sure the Pioneer FH-X730BS and the desired device are in pairing mode when connecting . You can pair your devices under the Bluetooth settings. Navigate the Pioneer FH-X730BS Bluetooth settings to turn on pairing mode.
How do I reset my Pioneer Bluetooth?
How do I get my Pioneer Bluetooth to work?
Why is my Bluetooth icon grey in my car?
Grey – Bluetooth is off. Press the Bluetooth button on the back panel to turn Bluetooth on.