My iPhone has been a huge pain in the butt since iPhone X made it so that it thought my nipple under my shirt pocket is a finger that required it to do whatever my nipple wanted to do.
No more!! This article explains, settings->general->accessibility->tap to wake!! Disable it and my nipple is no longer empowered to hang up my phone calls.
And, it's harmless because settings->display & brightness->raise to wake makes it so that it almost always automatically wakes up when I want it to.