I have the "two back tap" accessibility feature setup to start chat gpt voice. It works great. I just two back tap and look at the phone and its ready to start listening.
I tried that back tap thing, surprised how poorly it worked to be honest maybe there is a knack to it.
Thing is these AI devices will become actually interesting when they start being observers in your life too and pre-empting rather than the siri style ask and response and that just isn't possible on a locked down OS like iOS.
My really old LG android had a wake on doubletap screen. Worked really well. All newer phones have failed misserably or completely missed the function. Still miss it, was much more responsive than any new phone I bought.
Thing is these AI devices will become actually interesting when they start being observers in your life too and pre-empting rather than the siri style ask and response and that just isn't possible on a locked down OS like iOS.