there is too much battery drain overnight with [ultra durable] mode (possibly would be issue with other modes as well). 3 scenarios :
Airplane mode on - 2% , 0.3%/h . I would say it is decent and repeatable.
mobile network data on (not active), dual sim, wifi ON - 11% , 1.2%/h
mobile data off , wifi off , dual sim - 8% , 0.9%/h
I restricted all secondary apps (uber, etc.) from background data transfer. Most apps without autostart - except often used (calendar, gmail, keep). No facebook, tiktok and other trash like that.
I would say that p.2 is too much concerning enabled ultra durable and enabled wifi. And definatelly in case p.3 way too much - where data transfer is off . Looks like comms are consuming battery like popcorn
Another question - what the hell is "NextAppCore" app. Sometimes it has very high battery utilization.