How to set up my voicemail on my UMX phone?

Umx cell phone

I am trying to set up voicemail on my UMX I went to the  home button then phone and I touched and held the 1 key.  I never got the prompts to set up voicemail.  What to do:

Hi Danielle. Dial 1 and follow voice prompt. If that won't work, please directly contact your carrier.

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