From my experience with sony, it's best to stay with the android version (latest) that the phone came with. Probably it's the most tested and probably they do not bother to test much the updated one (lots of bugs)...I do not know if anyone else has the same problem, but after this last update 33.3.A.1.115, my XA keeps crashing, battery drains a lot faster than usual, and the RAM is alawys at its max.
Any suggestion?
thanks