Why is my iPhone 11 not ringing when I get calls?

No ring tone tone is heard on incoming calls on your Apple iPhone 11 Pro iOS 13.0. If Do Not Disturb is turned on, your phone is set to silent mode for a specified period of time. Solution: Turn off Do Not Disturb.

How do I turn my iPhone ringer back on?

How do I get my iPhone 11 off silent mode?