The SIM card is what connects your iPhone to your a cellular network.

Why Should I Remove And Reinsert The SIM Card?

Taking out the SIM card and putting it back in can give your iPhone a second chance to connect to your wireless carrier's network.

How Do I Remove And Reinsert The SIM Card?

  1. Use a SIM card ejector tool or small paperclip to open the SIM card tray on the right side of your iPhone.
  2. Close the tray once you've opened it.

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