Pocket or butt calls are more than just an annoyance
I have researched the above problem on line for my iPhone 12 and don't see an good solution or an App to prevent these calls. It's so easy to do to make the pocket call. Can't you devise a confirmation that the call is intentional? This is a recurring problem that Apple should take note of. I am a BIG Apple fan but this is more than an annoyance for someone who makes a living using the iPhone to call trusted business associates.
iPhone 12, 14