My incoming calls never go to voicemail. It used to work. Now, even when I try to set it to a certain number of rings or seconds (have googled, etc.), my calls just ring and ring until the caller hangs up. What can I do about this?
You may need to contact Tmobile support to reset it.
https://www.t-mobile.com/support/devices/device-troubleshooting/voicemail-troubleshooting
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