iphone 12 suddenly sending all calls to voicemail.

Please check the following.

• Check your DND status - Settings > Focus [Do Not Disturb]; Use Focus on your iPhone, iPad, or iPod touch - Apple Support
• Check BedTime Status - Clock App; Use Bedtime to track your sleep on your iPhone - Apple Support
• Check your Sound Volume; Adjust the volume on iPhone - Apple Support
• Check your Ringer switch; If you hear no sound or distorted sound from your iPhone, iPad, or ...
• Check Call Audio Routing; Call Audio Routing Bluetooth / Speaker / Automatic
• Check Auto Answer Calls; Turn off Auto Answer Calls

nancyfromseal beach Said:

"iphone 12 rings straight to voicemail. DND is off, call forwarding is off, ringer is on, phone is not in airplane mode. Phone was working normal until a few hours ago."

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Troubleshooting Calls Going to Voicemail:



Any Security Software Installed?

If you installed security software, then uninstall it. Its VPN settings may be getting in the way here. Security Software just gets in the way on a Mac, and this is a pure example of how and why.