How to fix the iPhone error “Last Line No Longer Available”

Last Line No Longer Available

When attempting to make a call on your iPhone, do you keep receiving the “Last Line No Longer Available” error? Unfortunately, you are not alone; numerous iOS users have experienced the same problem.

Below, we’ll go over what this error means, why it appears on your iPhone, and how to eliminate it. Let’s get started.

What Does the “Last Line No Longer Available” Error on iPhone Mean?

When attempting to make a phone call, an iPhone with a Dual SIM setup may display a “Last Line No Longer Available” error if it cannot detect the default or preferred line. It primarily affects iPhone 13 devices but can also affect other dual SIM-capable iPhone models, including the new iPhone 14.

The underlying cause is a random issue or glitch with the cellular radio, a corrupt call log, or a network setting that is wrongly set up. You can continue to use your other phone number, although this is only sometimes practical.

Toggling Airplane Mode on and off, continuing your iPhone, or clearing your “Recents” history are common fixes. If none of the more basic fixes work, you may need a carrier settings update or a network reset.

Let’s review each method that could be used to fix the “Last Line Not Available” iPhone error.

1. Switch Phone Lines Manually on iPhone

When you dab the Call option on the “Last Line No Longer Available” popup, the call is routed through the other line on your iPhone. If that doesn’t work, try manually changing numbers.

  •  Dab the current line at the top of the screen to pick the other line while dialing a new number.
  • While calling from the “Favorites” or “Recent” lists, tap the Info button and join the desired number.


Resume with the potential fixes below if you wish to use something other than the alternative line on your iPhone.

2. Toggle Airplane Mode On and Off on iPhone

Promoting and disabling Airplane Mode on the iPhone is a temporary fix for most cellular connectivity issues. Spread the Control Center (swipe down from the top-right corner of the screen or double-click the Home button) and dab the Airplane Mode icon. Then, tap the icon again after waiting 10 seconds.

3. Restart Your iPhone

Another easy fix for the “Last Line No Longer” accessible error is to restart your iPhone. Unfortunately, because iOS lacks a “Restart” option, you must turn off the device and manually restart it.

Flare the Settings app and navigate to General > Shut Down to accomplish this. Then, lift the Power icon to the right, stay until the screen goes completely dark, and have the Side button until the Apple logo appears.

4. Clear Your iPhone’s Call History

If the iPhone error “Last Line No Longer Available” occurs while dialing a contact or number from your “Recents” list, delete the call entries linked with the number and try again. To accomplish this:

  1.  Switch to the Recents tab by opening the Phone app.
  2. Select Edit.
  3. Tap the Delete icon next to each contact or phone number entry.

Delete the entire call history if the error appears for every number on your iPhone’s “Recents” list. To accomplish this:

  1. Tap Edit after opening the Phone app and switching to the Recents tab.
  2. Clear the screen.
  3. Select Clear All Recents.

5. Update the Carrier Settings on iPhone

Check to see if your iPhone is due for a carrier upgrade. First, open the Settings app and tap General > About to do so. After then, scroll down to the Carrier section and wait up to a minute. If a “Carrier Update Available” popup appears, tap Update to install it.

You can also check your current carrier settings on your carrier’s website to verify if they are up to date.

6. Avoid Using Your Preferred Line for Cellular Data

If you utilize your default or preferred line to get cellular data, the “Last Line No Longer Available” error may appear on your iPhone. You can modify that by taking the following steps:

  1. First, tap Cellular while in the Settings app.
  2. Select Cellular Data.
  3. Like the other phone line or Off to turn off cellular data completely.

7. Disable Automatic Network Selection on iPhone

Another cause of the iPhone “Last Line No Longer Available” error is a feature called Automatic Network Selection. It starts your iPhone to pick the best network to connect to, but with Dual-SIM iPhones, it presents problems.

Open the Settings app and tap Cellular > Net Work Selection to turn off Automatic Network Selection. After that, turn off the switch next to Automatic Network Selection and pick your transportation network.


8. Disable Wi-Fi Calling on iPhone

Wi-Fi Calling lets you create and receive phone calls over Wi-Fi in regions with low cellular signal strength. However, it may cause conflicts and result in the “Last Line No Longer Available” error.

Unplug the Settings app and tap Cellular > Wi-Fi Calling to fix this problem. Then, turn off the button next to Wi-Fi Calling on This iPhone.

9. Install the Latest Software Updates

Apple distributes software updates to iPhones regularly to address situations like these. As a result, a later software version may include a permanent fix for the “Last Line No Longer Available” error. Preferably, open the Settings app and select General > Software Update to verify. Then, tap Download & Install to install your iPhone’s most recent iOS version.

10. Reset Network Settings on iPhone

If none of the previous fixes work, try resetting the network settings on your iPhone. Open the Settings app, navigate General > Transfer & Reset Phone > Reset > Reset Net Work Settings, and tap Reset.

Say Goodbye to the “Last Line No Longer Available” Error

Turning on and off Airplane Mode, restarting your iPhone, or clearing your “Recents” list usually fixes the “Last Line Not Available” error. If not, go through the other fixes listed above, and it should go away eventually.

If the situation persists, your only choice is to get your carrier or Apple Support for assistance. But don’t worry; they’ll be able to assist you in more ways than we could.

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