Why Won't My Iphone Send Messages And I Can't Call People?

So whenever I try to send a text message to someone it never goes threw and when I try to call someone it won't work? Sometimes it will say ''calling -enternamehere-'' but there's no ringing or anything and it could stay like that for hours if I just never hit end call.

It WILL work if I turn my phone off and back on though. Anyone else have this problem?

Its an iPhone 4.

Hi! I have the iPhone 5 but the 4 might be similar in this case. Sometimes when my phone won't text it says message failed, you can try pressing the text you sent and then it will come up as send as text message and it usually works. Sometimes with calling you might not have your cell service on or the area you are in nigh not enable cellular advices. Hope I helped

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