1. Overheating 

2. Battery draining issue

3. While changing brightness from status  bar it does not change on one try I had to change the brightness 2 times for it to take effect.

3. Network issue (both wifi and mobile data)

4.iManager does not show proper junk data when space cleanup.

5. Screen flickering ( I faced it 3-4 times on the day of updating but not facing it now)

6. Sometimes there is no notification sound.

7. While using tws , they keep getting disconnected on their own .

8. While using earphones and headphones while they are connected the phone does not show them being plugged.