Scratching your head over the last line no longer available error? Check out How to fix the Last line no longer available error on iPhone.
When you try to make a call from your usual phone number, you keep getting the ‘Last Line No Longer Available’ message on your iPhone 13.
Relax, because you are not alone in dealing with this recurring problem. This problem on iOS 15 has been reported by several iPhone 13 customers.
While the issue appears to be widespread on the iPhone 13 series, it also affects older iPhone devices running iOS 15. As always, we’ve put together a tutorial to assist you in resolving the ‘Last Line No Longer Available’ error on iPhone 13.
So, let’s go into troubleshooting mode and look at some potential remedies to the problem!
How to fix the Last line no longer available error on iPhone
Why do I get the ‘Last Line No Longer Available’ Error on my iPhone?
The ‘Last Line No Longer Available’ message is nothing new, as it has been present on Apple iPhone since iOS 12. Dual-SIM iPhone models affected include the iPhone XR, iPhone XS, XS Max, iPhone 11, 11 Pro, 11 Pro Max, iPhone 12, 12 mini, 12 Pro, 12 Pro Max, iPhone 13, 13 mini, 13 Pro, and 13 Pro Max.
When a user attempts to make a call from the default line using the phone app’s recent logs, an error message appears on the screen that reads, “Last Line No Longer Available.” “Would you like to call using your last available line?”
For those who are unaware, iOS allows you to configure your default line (phone number) for iMessage and FaceTime when you have two SIMs active on your smartphone.
Furthermore, the iPhone lets you use the default line when contacting or texting someone who isn’t in your Contacts app. You can set your default line for calls and texts and use the other line for cellular data alone, depending on your needs.
The issue prevents customers from dialing a number using their preferred SIM card. As a result, they are compelled to use the remaining line for that reason. So, we’ll show you how to cure the ‘Last Line Not Available’ error on your newly purchased iPhone.
Fix ‘Last Line No Longer Available’ Error on iPhone
- Turn On/Off Airplane Mode
Believe it or not, airplane mode is my go-to troubleshooter for any network-related difficulties on my iPhone. If there is an infrequent network glitch, restarting the radios usually solves the problem. So, before proceeding to the other changes below, try out this handy trick.
Swipe down from the top right corner of the screen (for iPhones without a home button) to access the Control Centre, then press on the airplane mode symbol to enable it. After a few seconds, hit the airplane mode symbol to turn it off and re-enable your network connection. Now, use your desired SIM card to contact any contact on your iPhone to see if the ‘last line no longer available’ issue has been rectified.
- Clear Your Recent Call Log
Several iPhone users who encountered the ‘Last Line Not Available’ issue stated that erasing the recent call history solved their problem. While it may sound strange, we have come across several out-of-the-box solutions that have assisted in the resolution of problems in the past. So don’t pass this one up either.
Launch the Phone app on your iPhone, scroll down to the Recents menu, and then tap “Edit” in the top right corner of the screen. Then, in the top left corner of the screen, press “Clear.” Then, to finalize the deletion, pick the “Clear All” option. Restart your iPhone now.
- Force Restart Your iPhone
Force restart (also known as hard reset) clears the cache and deletes unnecessary temporary files on your iPhone, which frequently resolves many iOS difficulties. As a result, you should give this clever method a try as well.
If you have an iPhone 8 or later, you can do the following: Increase the volume by pressing the volume up button. Then, press and release the volume down button quickly. After that, hold down the power button until you see the Apple logo on the screen.
On the iPhone 7/ 7 Plus, press and hold the power and volume down buttons at the same time until the Apple logo appears on the screen.
Hold down the power and home buttons simultaneously on an iPhone 6s/ 6 Plus or before until the screen turns dark and the Apple logo appears.
- Try Switching Between SIMs
For calling purposes, iOS allows you to switch between SIM cards. Even if you have a default line for calls and messages configured, you can alter it. If the ‘Last Line No Longer Available’ error still prohibits you from calling from the default line, try switching SIM cards on your iPhone.
Tap the i button next to the contact you wish to call -> your primary phone number -> alternate phone number.
When dialing a phone number manually, press the primary phone number and select the alternate SIM.
- Update Carrier Settings
Another option for troubleshooting the ‘Last Line Not Available’ issue on your iOS device is to change the carrier settings. There’s a chance the issue is due to a carrier network, which you can fix by changing your device’s carrier settings.
The good news is that carrier providers frequently make upgrades to improve general network performance and eliminate sporadic glitches.
Navigate to General -> About in the Settings app on your iPhone. You may now receive an alert requesting that you update your carrier settings.
Then, on the pop-up window, click “Update,” and you’re done!
- Remove and Reinsert Your SIM
Have none of the following alternatives managed to resolve the problem for you? So, take out the SIM card and replace it. Many people have benefited from this time-honored strategy for resolving cellular issues. Turn off your iPhone and then remove the SIM tray with a SIM-ejector tool. Wait a few seconds before reinserting the real SIM card.
Then, to turn on your device, press and hold the power button. Place a call on your iPhone’s default line and see whether you still get the ‘Last Line No Longer Available’ problem prompt.
- Reset Network Settings
When I encounter a network-related problem, the first thing I do is reset the network settings to factory default. Because the ‘Last Line No Longer Available’ problem appears to be related to the e-SIM, we recommend you try this trick as well.
Navigate to General -> Transfer or Reset iPhone -> Reset -> Reset Network Settings in the Settings app.
Enter your device’s passcode again and pick the “Reset Network Settings” option in the pop-up to confirm your choice.
- Update Software
Most iOS versions these days contain a slew of issues. While some are corrected in later versions, others, particularly the less reported ones, persist for an extended period.
Furthermore, there are a few bugs that appear from time to time, and we mentioned some of the most prevalent iOS 15 problems and their solutions in the linked post. Though it may appear to be a criticism of Apple’s mobile operating system, it is an unpleasant reality.
If you are still experiencing the error when calling from the default line, a bug is most likely to blame. As a result, updating the software could cure the problem.
- Reset All Settings
When basic troubleshooting methods fail to cure a common iOS issue, erasing all previous settings and resetting the device can be beneficial. As a result, we recommend that you try this method next to resolve the ‘Last Line No Longer Available’ error on your iPhone.
On your iPhone, go to Settings -> General -> Transfer or Reset iPhone -> Reset -> Reset All Settings.
To finish, input your device’s passcode and tap “Reset All Settings” once more.
Even though Apple has the reputation for providing the best hardware and software, sometimes things won’t go the best way. However, we are sure by now you must have fixed the “Last Line No Longer Available” with the 9 best solutions provided above.
Let us know which solution worked for you in the comments.
Hey there! I’m Chelsea and chief editor of macsecurity.org. I have always loved Apple products for its efficiency and performance. I love reviewing the latest Apple products and designing guides for old and new Apple users! And in my free time I love experimenting in the kitchen (though, it doesn’t work out 9/10 times)