I put my phone in DND mode but still when someone calls it doesn't reject the call rather the caller will hear the ring and my 4G/5G Network signal at the receiving end hangs until the caller drops their call. This is not really DND in IMHO, it's allowing calls but it's not alerting the phone with a ringtone or vibration, just keeping mum.
Is there any way to block the calls strictly when in DND so that the caller hears a busy tone and my signal isn't interrupted or blocked?
My phone is on Android Version 10
Any tweaks to really to make DND work so that it wouldn't block my 4G/5G signal and the caller should hear a busy tone or some rejection notification.