I have updated IQOO 15 to this New Update. Tested for 2 days, and now battery optimisation is really good. In previous last update I had complaint of battery draining by 7-8% even in phone idle condition at night. But with this new update, this issue is fixed now, battery dropping only 2% in phone idle condition at night. Even daily usage battery backup has also improved now. Good battery optimisation iqoo team @NaveenYerradla@TechSAM009  Hope this battery optimisation will be consistent in future updates as well, and there will be no drop in battery backup.