I have a new Bluetooth headset and would like to use Siri with it. As far as I know, the standard way is to hold down the "call" button for a long press. Unfortunately, my headset treats a 3-second press as a "turn off" signal. Is there a workaround? Possible options I've thought of include shortening the press needed to trigger Siri, remapping the "redial" function (which on this headset involves double-tapping the button", using an alternate combo to trigger Siri, or turning on "Hey Siri" for Bluetooth only.
To add to what Mommy Me stated, I found out that if I press and hold the call button, quickly say "Hey Siri", then quickly release the call button, you will hear the 3-note headset response and then the Siri "gong" will respond. If you hold the call button press too long (past the headset 3 note response) it will turn off the headset. Also make sure you don't release the call button before you completely say "Hey Siri" or nothing will happen.