What version are you using?
8 / Oreo?
That is just the start of the nightmares with them (battery drain)...have you experienced the wi-fi drop out issue?
I thought that it was a Sony issue at first but it is not:
https://talk.sonymobile.com/t5/Xperi...p/1277739#gref
https://talk.sonymobile.com/t5/Xperi...p/1229275#gref
This issue is not solved at all, I am all but ready to leave Android / move to Apple.
This sucks. All round.