Some features is not working

[shankhadipdas]

Gcam is not working properly
Phone working slowly than android 9
Sometimes Bluetooth is not connecting to audio device
Media volume is not adjusting during phone call

[victor010]

Hi, kindly help us with the following information to find a solution to your query.
1.  Name of the Asus device you are using.
2.  Firmware version your device is on.
3. Elaborate more on your concern using screenshot of the issues so that we can help you better.