Why ASUS ZENFONE MAX PRO M1 not support CALL WAITING SERVICE.

[VEL_ASSA]

I updated Android 10 beta 2 version 424.
How to fix this call waiting service issues.

[Kush]

You can activate call waiting by dialling *43#.

[VEL_ASSA]

It was shown already enabled.
But not working in my BSNL number

[VEL_ASSA]

Give any tips to enable CALL WAITING SERVICE in BSNL

[Riju9547]

You can find the settings in dialer> 3dots>settings> calling accounts> bsnl> additional settings> call waiting(enable).