Galaxy S4 suddenly cannot make/receive calss.
Have you turned off the phone and removed the SIM card for a minute or two? SIM cards can go bad; if you need a new one, they are free by contacting Customer Service or visiting your local Corporate VzW store.
Frarud96, it's always important to have your phone do what it's designed to do. What zip code are you in? What happens when you try to call out?
ErinW_VZW
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