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Feb 17, 2014 5:21 AM in response to FelipeMRafaelby Ingo2711,Did you already try the suggestions in this article?
iPhone: Troubleshooting No Service
Symptoms
Your iPhone may have one of these symptoms:
- iPhone displays "No Service" or "Searching" in an area of good coverage
- iPhone doesn't regain service when returning to an area of coverage
Resolution
If you encounter either of the above symptoms on your iPhone, follow these steps to attempt to resolve the issue. Test after each step.
- Toggle airplane mode: Tap Settings > Enable Airplane Mode, wait five seconds, then turn off airplane mode.
- Turn iPhone off and then on again.
- Remove the SIM card and verify that it's a valid, carrier-manufactured SIM. Also verify that it isn't damaged, worn, or modified. Then reinsert it.
- Check for a carrier-settings update. Connect to a Wi-Fi network. Then tap Settings > General > About. If an update is available, iOS will ask you if you want to install it. If Wi-Fi isn't available, connect your device to iTunes.
- Update your iPhone to the latest version of iOS.
- Reset network settings by tapping Settings > General > Reset > Reset Network Settings. This will reset all network settings, including Bluetooth pairing records, Wi-Fi passwords, VPN, and APN settings.
- Restore the iPhone.