July 25, 2024

What is the ‘Last Line No Longer Available’ Error on iPhone

When trying to make a call from your usual phone number, you keep getting the ‘Last Line No Longer Available’ error on your iPhone.

Relax, this mistake isn’t new, and it’s easy to solve with a few simple procedures. This problem has been reported by a number of iPhone users on iOS 15. While the issue appears to be widespread on the iPhone series, it also impacts older iPhone models running iOS 15. As usual, we’ve put together a tutorial to assist users in resolving the ‘Last Line No Longer Available’ error on iPhone. So, let’s get into troubleshooting mode using this article and see if there are any potential solutions to the problem!


Why does this happen?

The ‘Last Line No Longer Available’ message is nothing new, as it has been observed on Apple iPhones since iOS 12. Dual-SIM iPhone models were affected by the problem. When a user uses the phone app’s recent logs to make a call from the default line, an error message appears on the screen that reads, “Last Line No Longer Available.” “Would you like to make a call on your spare line?”

When two SIM cards are active on the device, iOS allows users to set the default line (phone number) for iMessage and FaceTime. Furthermore, when calling or sending a message to someone who isn’t in the Contacts list, the iPhone allows users to use the default line. Users can configure the default line for calls & texts and use the other line for cellular data alone, depending on their needs.

last line no longer available

Users are unable to dial a contact using their preferred SIM card due to the problem. As a result, they are compelled to use the last available line for that reason. So, we’ll teach you how to resolve the ‘Last Line No Longer Available’ error on several iPhone models.

How can Users fix the Last Line No Longer Available on iPhone?

Clear the Call Logs

This is a very useful method for resolving Last Line No Longer Available on iPhone, therefore I put it first. Some people on Apple Community claimed to have addressed the problem by cleaning call logs.

  • Go to the Phone App
  • Recents
  • Click Edit
  • Clear
  • Click on “Clear All Recents”

Clear the Call Logs

Check New Update

Check the iPhone’s update version to see whether it’s up to date; such flaws may be fixed in the most recent iOS 15. It is preferable to give it a shot.

Sign up for the Apple Software Program at the Apple Software Program website.

After reading the agreement, click the ‘Accept’ button to accept it.

Go to apple.com/profile on your iPhone, login in with the same Apple account, and download and install the profile.

  • Go to Settings
  • General
  • Profile
  • Tap on iOS 15 or iPadOS 15 Software Program and click Install.

Check New Update i phone

When the installation is complete, users can restart the iPhone.

Restart iPhone When Last Line No Longer Available iPhone

In most cases, restarting the device can resolve numerous issues caused by bugs. For a few seconds, press and hold the power button until the power off slider displays. Press the power button and drag the slider until the apple logo shows.

‘Find Contacts’ should be Turned off

Some users in iPhone Community said that they fixed this issue by turning off the ‘Find Contacts’.

  • Go to Setting
  • Contacts
  • Siri and Search
  • Turn off Find Contacts in Other Apps.

Find Contacts’ should be Turned off

Users Should Force Restart the iPhone ‘If Last Line No Longer Available’ Error stays

How do I force a reset on my iPhone depending on the model? Depending on the model of your iPhone, follow the steps below.

Press the Volume Up button for nearly 5 seconds.

Press the Volume Down button for nearly 5 seconds.

Press down the Power button until the Apple logo is visible.

restart the iPhone

Remove and Reinsert SIM

None of the previous solutions have been successful in resolving the problem? So, take out the SIM card and replace it. This age-old approach has helped consumers get rid of cellular troubles on several occasions. Pull out the SIM tray with a SIM-ejector tool after turning off the iPhone. Wait a few moments before reinserting the real SIM card.
Remove and Reinsert SIM

Then, to turn on the gadget, press and hold the power button. Place a call on the iPhone’s default line and see if the ‘Last Line No Longer Available’ error is still shown.

Reset Network Settings

Sometimes, re-setting the network settings could also remove a few software problems.

  • Go to Settings
  • General
  • Reset
  • Reset network settings.

Reset Network Settings

Update Carrier Settings

Users should also attempt updating their carrier settings to resolve the ‘Last Line No Longer Available’ issue on their iOS device. There’s a chance the issue is caused by a carrier network, which consumers can fix by upgrading the carrier settings on their iPhone. The good news is that carriers frequently deploy upgrades to improve general cellular network performance and eliminate sporadic glitches.

  • From the Settings app on iPhone and go to General –
  • About

Now, users may receive an alert asking them to update their carrier settings.

Next, tap “Update” on the prompt of pop-up, and users can continue further!

Update Carrier Settings

Reset All Settings

When simple solutions fail to cure a common iOS issue, wiping away all current settings and resetting the device can assist. As a result, we recommend that customers attempt this option next in order to resolve the ‘Last Line No Longer Available’ error on the iPhone.

  • Go to Settings app on the iPhone
  • General
  • Transfer or Reset iPhone
  • Reset
  • Reset All Settings.

Now, type the device passcode and click on “Reset All Settings” once more to finish.

Reset All Settings


So, now that we’ve arrived at this point, you’ve undoubtedly gained a better grasp of why the last line no longer shows, which is caused by problems in the dual-sim iPhone’s functionality. This article was created specifically to solve a variety of tiny and large iPhone issues, follow for more such solutions.


After working as digital marketing consultant for 4 years Deepak decided to leave and start his own Business. To know more about Deepak, find him on Facebook, LinkedIn now.

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