Still getting the “Last line is no longer available” error message when trying to make a call on your iPhone? You are not alone as several iOS users have encountered the same problem.
Below, we will briefly discuss what this error means, why it appears on your iPhone, and teach you everything you can do to get rid of it. So let’s get started, okay?
What does “The last line is no longer available” error mean on iPhone?
An iPhone with a dual SIM setup may display the “Last line is no longer available” error when it has trouble detecting the default or preferred line when trying to make a phone call. It mostly appears on various iPhone 13 models, but it can also be an issue on other Dual SIM compatible iPhone models.
The underlying reason is some random bug or glitch with the cellular radio, a corrupt call log, or a misconfigured network configuration. You can still use your other number, but that’s not always practical.
Solutions like turning Airplane Mode on and off, restarting iPhone, or clearing “Recents” history usually help resolve the issue. However, you may need to resort to performing a carrier settings update or a network reset if none of the simpler solutions help.
Let’s go through every possible way to fix “The last line is no longer available” iPhone error.
1. Change phone lines manually on iPhone
touching the To call The option in the “Last line is no longer available” popup window automatically puts the call through to the other line on your iPhone. If that doesn’t work as well, try changing the numbers manually.
- While dialing a new number, touch the current line at the top of the screen and select the other line.
- While making a call from the “Favorites” and “Recent” lists, touch the Information and choose the number you want.
If you don’t want to use the alternate line on your iPhone, continue with the potential solutions below.
2. Turn Airplane Mode On and Off on iPhone
Enabling and disabling Airplane Mode is a quick fix for most cellular connectivity issues on iPhone. Simply open Control Center (swipe down from the top right of the screen or double-click the Home button) and touch the button Airplane mode icon. After waiting 10 seconds, tap the icon once more.
3. Restart your iPhone
Another quick way to fix “Last Line No Longer” available error requires you to restart your iPhone. Since iOS does not have a “Restart” option, you need to turn off the device and restart it manually.
To do this, open the Settings app and go to General > To close. Then slide the Energy on the right, wait until the screen goes completely dark, and press and hold the Side until you see the Apple logo.
4. Clear your iPhone call history
If you get the “Last line is no longer available” iPhone error when dialing a contact or number in your “Recents” list, delete the call entries associated with the number and try again. To do that:
- Open the Telephone app and switch to recent tab.
- Play Edit.
- tap on the Erase next to each entry related to the contact or number.
Delete the entire call log if the error occurs for each number in your iPhone’s “Recent” list. To do that:
- Open the Telephone application, switch to recent tab and touch Edit.
- Play Of course.
- Play Clear all recent.
5. Update carrier settings on iPhone
Check if your iPhone has a pending carrier update. To do this, open the Settings app and touch General > On. Then scroll down to the Conveyor section and wait up to a minute. If you get the message “Carrier update available”, touch To update to install it
6. Avoid using your preferred line for mobile data
The “Last line is no longer available” error can also appear on your iPhone if you use your default or preferred line to access mobile data. You can change that by following these steps:
- Open the Settings app and touch Cell phone.
- Play Cellular data.
- Select the other phone line or Off to disable mobile data completely.
You can also try experimenting by setting the Allow mobile data switching option on or off.
7. Disable automatic network selection on iPhone
Another reason for the “Last line is no longer available” iPhone error is a feature called Automatic Network Selection. It asks your iPhone to choose the best network to establish a connection, but it causes problems on dual SIM iPhones.
To disable automatic network selection, open the Settings app and touch Cell phone > network selection. Then turn off the switch next to Automatic network selection and choose your operator’s network.
8. Disable Wi-Fi Calling on iPhone
Wi-Fi Calling allows you to make and receive phone calls over Wi-Fi in areas with poor cellular signal strength, but it could also create conflicts and cause the “Last line is no longer available” error.
To fix that, open the Settings app and touch Cell phone > Wi-Fi calls. Then turn off the switch next to Wi-Fi calling on this iPhone.
9. Install the latest software updates
Apple regularly pushes software updates to iPhones to address issues like this. Therefore, a newer software version might contain a permanent fix for the “Last line is no longer available” error. To check, open the Settings app and go to General > Software update. Then touch Download and install to install the latest available version of iOS for your iPhone.
10. Reset Network Settings on iPhone
If none of the above solutions work, try resetting your iPhone’s network settings. To do this, open the Settings application, go to General > Transfer and reset phoneand play Reset network settings.
A network settings reset erases your iPhone’s cellular phone settings and preferences, but they should update automatically after the device restarts. Contact your provider if they don’t.
Resetting network settings on your iPhone removes all saved Wi-Fi hotspots and passwords. You must manually rejoin any network afterwards.
Say goodbye to “The last line is no longer available” error
Turning Airplane Mode on and off, restarting the iPhone, or clearing the “Recents” list almost always fixes the “The last line is no longer available” error. Otherwise, take the time to review the other solutions above, and it will eventually go away.
However, if the problem persists, the only option left is to contact your carrier or Apple Support for help. But do not worry; they can help you in more ways than we can.