So until I loaded 13.1 beta, previously had the last release of 12.x on the phone, the battery case worked flawlessly. Now, it seems the phone doesn't always see the case, or doesn't charge. If I remove the case and put it back on, then it works for awhile. I am sure there is some issue or bug in this build that needs to be resolved. And yes, I know the case was never officially supported on the X, only the XS, but it worked perfectly before.