Phone calls can go either way for me depending on my fluency at the moment. Along my journey from severe to some people who know me don’t believe me that I have a stutter, I approached the phone as an acting gig (for work when I didn’t really know the other people in real life) and like many others, when I act even not by script, I can sound eloquent and fluent af! But obviously that’s always a viable option. But over 30 years of trying to master this birth defect and beat it enough to have more good days than bad days, I’ve employed this technique. It pumps me up to own my disability on days like that. It’s a birth defect that others can’t see which sometimes is less difficult to fit in with normals but I’ll be damned if someone claims it cannot be worse than something you can see. Own the situation for yourself is my new pump me up mantra to conquer something whether it be a speech or a simple phone call. Keep on working. It can get better while wait for neurobiologists to come up with the fix!