I'm using IQOO 9SE from last 2 years and my experience is average.

1. Battery drain should be optimised as to increase battery life and ultimately phone's life.

2. UI should adopt things which helps user in day today life. Some handy features in lock screen with cool modern personalization, AOD should have more than 4 apps notification, home screen personalization and many more.

3. Updates support atleast 4 major Android updates and 5 years of Google security updates in their premium and above 25k budget range as the hardware is best in segment and it is compatible.

4. Camera UI is good but need to work little on photo processing. As we know IQOO is performance centric but camera is not a daily use part in life of IQOO user, but when they use it experience should not atleast below par.

5. Should thoroughly work on customers feedback.

6. Personally I play BGMI, the day I unboxed it but no support of 90fps. Some phones starts to support 120fps, still with good hardware play on 60fps which is quite disappointing for me as a user.