IPhone 4 won't receive texts?

For some reason my iPhone will vibrate, but I don't get texts. Then I had a friend text me that said they had been texting me, but I wasn't getting any texts. Why am I not getting texts and what's up with the vibrations? I'm on iOS 6.1.2 by the way

Maybe you should go to the App Store ir something where you bought it and ask why it's not receiving the text?

Does your friend have metro pcs? Are you with att&t? Try to get SMS texting @ the https://play.google.com/....com/store
you should take your phone in to your phone store and tell them what's wrong with it they will help you with it this is free…

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