How can I prevent incoming calls from going directly to voicemail?

[iMore Question]

my 4s keeps going directly to voice mail. how can I stop this

 

[Peligro911]

my 4s keeps going directly to voice mail. how can I stop this

what service do you have ?

 

[Ledsteplin]

Make sure Do Not Disturb is not set or set wrong.
Next try a hard reset.
Hold the top power/sleep button and the home button at the same time until the Apple logo appears, then release.

If that doesn't work you might call your carrier for help.