Tech
11 Easy Ways To Fix Last Line No Longer Available On iPhone

Recently, Apple unveiled iOS 15 and the iPhone 13 models, and customers have been very outspoken about what the firm has to offer, with some offering complete acclaim and others being extremely critical. The ‘Last Line No Longer Available’ message that occasionally appears inside the Phone app is one of the issues customers are having.
Even worse, the issue affects a large number of iPhone 12 and iPhone 11 series models as well, not only the more recent iPhone 13 models. We’ll explain the details of this problem on this page, along with some potential self-help solutions.
What is the “Last Line No Longer Available” error on iPhone?
When a user activates their iPhone 13 for the first time, it seems that the “Last Line No Longer Available” error appears just before they are about to make a call. Based on prior occurrences, it appears that this problem is an error that’s somehow connected to the e-SIM feature on some more recent iPhones. An
The dual-SIM option on more recent iPhone models, including the iPhone 13 series, iPhone 12 series, iPhone 11 series, iPhone XR, and iPhone XS/Max, is made possible via e-SIM, a digital SIM.
Users who experience the “Last Line No Longer Available” error claim that the Phone app’s recent logs notify them of the error as soon as they are ready to place a call from their default line. The SIM you prefer to use for calls and texts to folks you haven’t stored as contacts is known as the default line.
You are unable to phone the contact using your selected SIM card due to the problem, so you must attempt another mode of communication. It has been a reoccurring problem on earlier iPhones following a recent iOS upgrade, so it doesn’t simply impact the newest iPhone 13 models.
How to Fix “Last Line No Longer Available” error on an iPhone?
You might want to have a look at the workarounds we’ve listed below if you keep getting the “Last Line No Longer Available” error on your iPhone. Make sure to check if the problem persists after attempting each of these solutions.
Fix Last Line No Longer Available #1: Enable/Disable Wi-Fi calling
With the help of the function known as “Wi-Fi calling,” iPhones may make phone calls while connected to a Wi-Fi network. This will enable you to make phone calls from your iPhone through a wireless network rather than through your cellular service provider. However, problems like the Last Line No Longer Available error can occasionally occur while connecting to a Wi-Fi network for calls. If the Wi-Fi calling function is activated, you could try deactivating it to resolve this problem.
Open the Settings app on your iPhone and choose Mobile Data to turn off Wi-Fi calling.
In Mobile Data and select Wi-Fi Calling.
Turn off the Wi-Fi Calling on This iPhone option at the top of the next screen.
You can try turning on the functionality if it is already turned off but you are still receiving the “Last Line No Longer Available” issue.
You will be prompted to confirm your want to allow this function when you turn it on. To begin making phone calls while utilizing Wi-Fi calling, tap Enable.
Check to see whether the “Last Line No Longer Available” bug is fixed now. This workaround appears to be hit or miss, as some users reported that turning off the function fixed the issue while others were successful in doing so by enabling Wi-Fi Calling.
Fix Last Line No Longer Available #2: Enable/Disable Network Selection
The iPhone and other contemporary smartphones are made to automatically connect to cellular networks in their immediate vicinity. By disabling Network Selection on their iPhones, users may still manually connect to a cellular network. The “Last Line No Longer Available” issue most likely means that your iPhone is experiencing trouble connecting to a cellular network.
To see if it fixes the Last Line problem in this situation, try disabling Network Selection and then activating it again. Select Mobile Data in the Settings app on your iPhone to do this.
Tap on Network Selection in Mobile Data by your network provider’s name.
Turn off the Automatic toggle on the next screen.
Now choose a network manually from the list of networks that appears below that are affiliated with your service provider.
Now you can examine if the “Last Line No Longer Available” problem still shows up on your iPhone. Once the issue has been resolved, switch back on the Automatic toggle at the top to ensure that your iPhone chooses a cellular network automatically.
You can leave the Automatic switch turned off and choose your network manually to prevent the Last Line No Longer Available warning if the problem still exists after using the option.
Fix Last Line No Longer Available #3: Clear your Recent Call Log
While the “Last Line No Longer Available” error indicates that the problem is with your e-SIM, several customers have reported that the problem is fixed after clearing the recent call records from the Phone app.
Although cleaning your call records is a very simple procedure, you might want to pause before moving on as you won’t be able to retrieve this data in the future. It is now time to save any recent calls you have received from unknown numbers that you haven’t yet registered as contacts.
Open the Phone app on iOS and select Recents > Edit > Clear to remove calls from your recent call history. Choose Clear All Recents from the box that displays.
Fix Last Line No Longer Available #4: Try switching between SIMs
If your iPhone has the dual-SIM option, you may test swapping your SIM card for calls without altering other choices. By hitting the ‘i’ button on the person you wish to reach, choosing your default phone number from the list on the screen, and then tapping your alternate number, you can change your default line if you’ve already selected one for calls and texts. Tap on your Primary phone number at the top of your screen when manually dialing a number using the keypad, and then choose your backup SIM.
Fix Last Line No Longer Available #5: Update Carrier Settings for your network
Your iPhone must have the proper carrier settings in order to communicate with the specified network in order to connect to a mobile network. Although the iPhone’s carrier settings are activated as soon as you turn it on for the first time, network providers can change some of them later to improve the connection’s stability and security.
Your iPhone may experience the “Last Line No Longer Available” problem if there is a flaw in the carrier configuration that was previously placed on the device. Fortunately, your service provider may also offer updates for your carrier settings, just like they do for iOS upgrades.
Open the Settings app on your iPhone, then select General > About to update the carrier settings.
You should see the “Carrier Settings Update” prompt appears on the screen if there is an outstanding carrier update that has not yet been deployed on your device. To install the most recent configuration provided by your carrier, click Update here.
Fix Last Line No Longer Available #6: Enable Airplane mode and then disable
Numerous factors can contribute to network problems, but one of the simplest solutions is to temporarily reset your connection by turning on the Airplane mode and then rapidly turning it off. When you do that, your iPhone will seek to reconnect to the cellular network it was previously linked to after first becoming detached from it. Open the Settings app to do this, then toggle the Airplane Mode switch on and off to enable and then deactivate it.
Fix Last Line No Longer Available #7: Restart your iPhone
You might try to reset your iPhone if you continue to see the error message “Last Line No Longer Available” when making calls. Any device that you restart will reset its RAM and cache as well as all of its background services. This ought to be sufficient to address a few minor systems and app incompatibilities on your iPhone.
Holding the Power button (or the Volume Up and Power buttons) until you see the Power off slider, move it over, and waiting for your iPhone to power off will restart it. To restart the iPhone once it has completely shut down, press and hold the Power button once more until the Apple logo appears.
Fix Last Line No Longer Available #9: Update your iPhone to the latest iOS version
Your iPhone may have displayed the “Last Line No Longer Available” warning as a result of a problem that may have appeared after a recent software upgrade. The best course of action in these situations would be to update your iPhone to the newest version of iOS. When a problem arises in its software, Apple issues rapid upgrades to iPhones.
Open the Settings app and select General > Software Upgrade from the menu to update your iPhone to the most recent version of iOS.
When an update for your device becomes available, you may install it by selecting Download and install.
Fix Last Line No Longer Available #10: Reset your Network Settings
Resetting your network settings once wouldn’t be a terrible idea as the “Last Line No Longer Available” message indicates that there is a problem with your e-SIM. Go to Settings > General > Transfer Or Reset iPhone > Reset and choose Reset Network Settings from the popup menu to reset your network settings.
You may need to take your iPhone to Apple Support to have it looked at if, even doing all of this, you’re still unable to make calls due to the “Last Line No Longer Available” issue.