Galaxy s6 all of a sudden as in yesterday 8-30-2015 my phone will not ring and I can not dial out?

Jul 26, 2015
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phone was fine Saturday ringing I could dial out etc. yesterday i can not dial out and no one call call me it go right to voice mail??
 
I would contact your carrier to ensure nothing is going on with them or your account.
 
I had this problem too. I too switched sim cards, but then had the problem briefly again. A restart helped.

I was talking to Samsung support about another issue, and mentioned the dialing issue. They suggest I go to the three phone applications, clear cache, then force stop and restart the phone.
 
Is the phone turned on???
Just kidding - I couldn't resist. I used to work in a call center supporting wireless customers and once I had a customer with the exact same problem. After doing a lot of troubleshooting on her account (I spent far too long on it, much to my chagrin) I realized that she just didn't have the phone turned on. No wonder it wouldn't ring....