I have been having an issue making calls on my phone. I have had this issue before, where I try to make a call on my phone and when I swipe the contact I want to call it will say "Emergency Calls Only" and it will not let me dial the number. It seems like if I don't reboot my phone for a few days this happens or if I am playing a game. When this issue happens I cannot recieve text messages or incoming calls either.