I owned he Open Run Pro & Pro 2. I think they are great for music, videos etc but they have not worked out for making phone calls.
I have a Apple 14 Pro Max phone paired with the Open Run Pro 2 currently. I don't know what it is but about 20% of the time the person I am calling says I sound great. 80% of the time I get complaints of poor call quality on their end, but never on my end and from the same people . These are people I speak with regularly, are tech savy and are well aware of noise cancelling issues under certain circumstances. We have experimented when the issues occures and the issues is still present when both of us are in very low noise locations. I sent my Open Run Pros back for this very same issue and had the highest hopes for the Pro 2.
I wish there was an answer but Shokz doesn't seem to have one to offer.