No ring tone sound after upgrade to iOS 14.5

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iOS and iPadOS

After upgrading to iOS 14.5 on my iPhone 8, my phone no longer rings when I receive an incoming call. I've restarted my phone and checked Settings to make sure the ringer volume is enabled and set to 100%. I've disabled the volume buttons for the ringer. The phone (usually) vibrates. I hear other system sounds, so it's not the silence switch. I can't figure out why this is happening or what to do to fix it. Can anyone help me with this?

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