On my iPhone X running iOS v. 15.0.2 whenever I have the Do Not Disturb enabled I don't hear the phone ringing whenever someone calls my iPhone number.
I have the Google Voice app installed on this iPhone.
However, whenever someone calls my Google Voice number the iPhone will always ring.
This happens even though the iPhone is not being used (the screen is completely blank) and even though the phone numbers of the people calling are not in my Favorites call list.
I have tried doing things such as disabling the notifications for Google Voice but my iPhone continues to ring when I receive Google Voice calls.
What can I do to make it so that my iPhone will not ring when people call my Google Voice phone number while the Do Not Disturb feature is turned on within my iPhone?