iOS 12 Terrible battery life on iPhone SE

Ever since I updated to 12 (From iOS 10.3.3) the battery life on my SE is just terrible, it doesn't even get through the day without recharging. I charged the phone once every two days on iOS 10.3.3 with about 6-7 hours mixed usage time but now it's less than 4 the stand by time is bad too. I've already disabled all background services, location services, mail fetching and set the brightness below 40% but no joy, also I tried the "measure" app (which is cool btw) and the battery went down by about 10% within seconds after opening the app. The phone seems to be a bit snappier tho.

Anybody else?