Can you at least just fix the battery? Nothing else. I can live with all those bugs and if you fix them later it's better than nothing, but the battery is really important. I want to take my phone with me on a weekend trip without power banks. Can you do this? Or is the only guy who knew how to fix this and probably only needs to reuse the same code change from Android 7 no longer working at blackview? That would at least explain a lot.

Tech team is aware of all the bugs. They will need some time to sort these out. Please refer to the main topic about the battery drain issue on Oreo. No need to open multiple threads about the same issue.