I’m having all sorts of problems other my XR too. My text messages lag really bad. I’ll type 5 words before anything shows up, my screen closes as I’m typing my messages even though I didn’t swipe up. I even tried installing 14.3 and the problems got even worse in Facebook messaging. It completely freezes for several seconds. So irritating. The battery drain is awful, it says my battery optimization is 89% suddenly. I’ve also had issues with calls failing pretty often. They just won’t go through. Lastly I don’t get notifications for all my texts. People say I didn’t respond to them and then I notice I got a text but didn’t get notified. What’s up with that? What is apple going to do to fix these issues for everyone?