@gpatel-fr
Hi, thanks for the reply.
It was a new device purchased from Amazon.
Not pre-owned nor refurbished.
I recall the battery drainage to have been more consistent on previous releases.
I'm sorry if by abbreviating my story, some details might have been lost.
About two weeks ago I tried to make the Fairphone with Ubuntu Touch my daily driver, and I had consistent battery drainage then, similar to what @otadr described.
As I need some Android Apps for work, I tried to live with waydroid for some time, but ultimately decided against it.
Wednesday last week I went on a flashing spree which led me from LineageOS via /e/OS to IodeOS and back to Ubuntu Touch, just in time for the 24.04-1.3.
I did not observe this battery drainage on the previous Ubuntu Touch release, nor on the other ROMs.
Cheers