iPhone “No Service” message

NOTE: I’ve recently posted a better summary of how to troubleshoot this problem, with more fixes, and links to more information. I recommend you take a look at it before getting started: [“No Service” message on iPhone, part 2]


My iPhone started displaying a “No Service” message a few days ago. When it didn’t go away, I called the ATT Wireless people. Here are the easy steps to cure the problem:

  • If you have a 3G phone, try this before trying the next steps (thank you Lindsay, Joe and Leonard!): Go to Settings: General: Network: Disable 3G. Then reset your iPhone.
  • Go to Settings:General:Reset.
  • Click Reset Network Settings
  • Enter your passcode if you have created one.
  • Click the red button: Reset Network Settings
  • The iPhone will take a minute to shut down, then it will reboot.
  • Hopefully, service comes back.

    While I was waiting for someone to help me, I started the process on the Apple Support site to get my $100 Apple Store Credit for early iPhone owners. As soon as the iPhone rebooted, the confirmation message came through. Nice way to check the connection!


    NOTE: December 28, 2008 – if you are here because your iphone stopped working TODAY (Dec. 28, 2008), AT&T is having problems in some states, probably related to the high winds. See this forum for more