My iPhone will not send or receive calls?

My iPhone can text but it will not call or receive calls I can also receive texts I can open all of my apps and I can go online and email I just can't send or receive calls what is wrong with my iPhone?

Try turning it off then on… Or just set up your I cloud plug it in to the computer, make sure it saves. Un plug from the computer and reset your phone

Well you should go to your company and ask them? Or try taking the battery out and putting it back in

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