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 the Bluetooth on my Pioneer radio?
How do I get my Pioneer Bluetooth to work?
Why is my Bluetooth radio not working?
If your Bluetooth devices won’t connect, it’s likely because the devices are out of range, or aren’t in pairing mode. If you’re having persistent Bluetooth connection problems, try resetting your devices, or having your phone or tablet “forget” the connection.