ASUS - ZenTalk

Hi, i do not see Bluetooth battery icon in status bar. Though same bluetooth shows up with battery icon in OnePlus 6T. Can somone advise how to enable bluetooth battery icon in status bar ?

I am on latest update of Aug 2. When on whatsapp video call, if any gsm call is recived and disconnected, the voice of other party shifts to earpiece n never returns to speaker of phone in bottom. Even though camera module is out and video call is on...