Thankyou for your replies.
I think it’s certainly something I’m going to invest in. I do fly in the SE of London area so can be extremely busy. Even if it doesn’t pick up all returns as long as it picks up most it will be a lot better than relying on atc and the mk1 eyeball.
Annoyingly I bought a DC headset a year and a half ago and decided against the Bluetooth.
Does the traffic alerts still play through the phone and just to confirm it does pick up mode c and mode s traffic?