An iPhone that shows “No Service” error message after installing the latest iOS 13.3 update will lose its cellular network services unless connected to a wireless network. Therefore, features and services like calling, texting, and cellular data will not be available. However, there are also other factors that can trigger the No Service issue to emerge on your iPhone.
Troubleshooting an iPhone with no service
When your iPhone loses its cellular network connection, this means that your iOS device is unable to connect to the network. This can happen when your iPhone has been inflicted with random software glitches and iOS bugs. Another factor that can be tied to this no service issue is having a faulty SIM card or having erratic network configurations on your phone settings.
How To Fix iPhone No Service Error
First solution: Restart your iPhone to fix no service issue (soft reset)
Minor software glitches may have hindered your iOS device to acquire cellular network connection. To clear this out, simply restart your iPhone device. Doing so will not only eliminate these glitches but will also ensure that the newly installed system update will be implemented accordingly.
To restart your iPhone X and later versions via soft reset, follow these steps:
- Press and hold the Side/Power button and either Volume buttons simultaneously for a few seconds.
- Release both buttons when the Slide to Power Off command appears.
- Drag the power off slider to the right to turn off your iPhone.
- After 30 seconds, press and hold the Side/Power button again and release when the Apple logo appears.
To restart iPhone 6,7 or 8 versions, follow these steps:
- Press and hold the Side or Power button for a few seconds.
- Release the button when the power off slider appears.
- Drag the slider for at least 30 seconds to turn off the iPhone.
- Wait for another 30 seconds, and then press and hold the Side or Power button again and release when the Apple logo appears.
To restart iPhone SE, 5, and earlier versions, follow these steps:
- Press and hold the top button.
- Release the top button when the power off slider appears on the screen.
- Drag the power off slider for at least 30 seconds to shut down your iOS device.
- After a few seconds, press and hold the top button again and release when the Apple logo appears.
Once your iPhone is completely back on, check if it is already showing signal bars. If it does, try to make a test call and see if it goes through. If it is not letting you make a call or it still shows no service, move on to the next solution.
Second solution: Toggle the Airplane Mode on and off again
A “No Service” issue on your iPhone device can be simply remedied by utilizing the Airplane Mode trick. The Airplane Mode suspends the signal transmission on your iPhone. All your phone’s wireless radios and services will be deactivated. Once the Airplane Mode is off again, the wireless services will resume. Follow these steps:
- Go to Settings from Home.
- Select Airplane Mode.
- Toggle the switch to enable Airplane Mode. Doing so will suspend your iPhone’s wireless services.
- While the Airplane Mode is on, restart (soft reset) your iPhone.
- Then head back to Settings->Airplane Mode, and then toggle the switch to turn the feature off again.
Wait for your iPhone to resume all its wireless services including the cellular network connection. Check the menu bar on top of the phone screen if it has signal bars, or no longer shows No Service. If the problem persists, troubleshoot further.
Third solution: Check for and install a carrier settings update to fix your iPhone that has no service.
A carrier settings update is an update rolled out by the network carrier to enhance your phone’s network connectivity and performance. If you haven’t received an update notification from your carrier, you can manually check for and install this update. You need to connect your iPhone to a Wi-Fi as this process will require an internet connection. Here’s what you need to do after connecting to a wireless network:
- From Home, go to Settings.
- Select General.
- Then tap About.
- An option to update your carrier settings will pop out if there is an available update. Follow the onscreen instructions to download and install the carrier settings update.
Once the process has been completed, test the services and functions on your iPhone to make sure that they are already working again. But if you’re still getting a no service error on your device, try the next potential solution.
Fourth solution: Reset network settings
Network connectivity errors can also be the underlying cause. The recent iOS update could have compromised the saved networks on your iPhone device resulting for the cellular network signal transmission to be interrupted. Thus, leaving your iPhone to have no service at all.
Luckily, resetting your phone’s network settings can potentially fix this issue. A phone back-up is yet necessary as this method does not cause a complete data loss. Instead, your network settings will just be restored to default. All saved Wi-Fi passwords, Bluetooth connections, and VPN settings will be deleted, so make sure to take note of your Wi-Fi password.
- To reset your iPhone’s network settings, go to Settings from Home.
- Select General.
- Scroll to and tap on Reset.
- Then select the option Reset network settings.
- If prompted, enter your device passcode and then continue.
- Then select the option to confirm reset network settings.
Your iPhone will reboot by itself once the reset is done. By then, re-enable the necessary features to use them again like Wi-Fi. Since the process deleted the saved Wi-Fi passwords and your preferred networks, you need to set up your Wi-Fi again and then reconnect. Then check if the cellular services are already working again.
Fifth solution: Remove and then re-insert your SIM card
SIM card plays a vital role on your iPhone device. Once it becomes faulty, the rest will also follow. If this is the underlying cause for your iPhone to have no service after an iOS update, remove the SIM card to ensure that it has not been exposed to physical damage nor had been dislodged. Here’s what you need to do:
- Turn off your iPhone.
- Then insert the SIM eject tool or a paper clip into the hole beside the SIM card tray.
- Push it a little bit until the tray pops out.
- Then gently pull the SIM card tray from the slot and then remove the SIM Card.
- Check for any signs of physical damage like scratches and corrosion. Then make sure it is free of dust and dirt.
- If the SIM card is still in good condition, put it back into the SIM card tray and make sure that it is seated properly.
- Gently push the SIM card tray back into the slot.
Turn on your iPhone after installing the SIM card again. Once your iPhone shows sufficient signal bars, check if you are already able to make calls, send text messages, or access the internet using the cellular data. Otherwise, troubleshoot your iPhone further.
Sixth solution: Factory reset your iPhone
A factory reset is deemed to resolve various phone issues caused by major system glitches. If your iPhone still has no service after exhausting all the troubleshooting procedures provided above, resorting to this method is considered as your last option. But make sure to back-up your iOS device beforehand as this reset will wipe everything from your phone’s internal memory. Then restore your iPhone to factory default settings using these steps:
- From the Home screen, open the Settings app.
- Select General.
- Scroll down to and tap Reset.
- Select Erase all content and settings from the given options.
- If asked, enter your device passcode and then continue.
- Then select the option to confirm factory reset.
Once everything has been completely wiped out from your phone’s memory, you will be routed to the Welcome Screen. Follow the onscreen instructions to set up your iPhone as new again. After you have re-enabled the necessary features, check if your iPhone is already working.
Contact your network service provider
The no service issue on your iPhone can also be account-related, and contacting your carrier should be able to help you rectify the issue. Your service could have been suspended due to non-payment. It is also possible that there is an outage in your area affecting the service on your iOS device. Your device might have been blocked due to some reasons and therefore, it can no longer make or receive calls, send and receive messages, or loss cellular data connection. All these can only be verified by your network service provider.
Alternatively, you can also contact Apple Support for further assistance and recommendations.