I tried to connect to a conference call. While entering the conference passcode, while I entered the code 9927822# . But what the system accepted was 997822#. And hence it rendered the entry of code not valid. So, somehow there is some issue in the DTMF code being entered from my Nokia 6.1 Plus. Because when I tried it on a friend's OnePlus 3, I was able to connect. What should I do?