Since the 12 update my phone will sometimes freeze up when I try to go into settings. Since this new update it happens in other programs as well. Not sure what's causing the issue. It's a 256 GB and probably only 30% is used.
Interesting, I've never had this happen with my X, actually the first I've heard of it. Does it happen every time or intermittently? Also I know this sucks and is time consuming, but maybe it is worth doing a full backup and testing after a restore and set the device up as a new iPhone?