Been good on my Xr so far. Noticed my call drop outs (not complete drops but just dead spots in my conversations) that happen in the same place every day have been better than previous software versions.
Edit: I think it is mainly because I’m on Verizon. With it being in the same spot every single day I think it’s switching from tower to tower. From what I’ve read Verizon has never been particularly good at this with 4g. It is improving some with software updates. My 6 plus did it for just a split second but it’s 10-15 seconds sometimes on my Xr before the latest updates.