“Last Line No Longer Available” on iPhone 13: How to Fix It

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Written By Jam radar

Jam Radar specializes in delivering astute tech reviews, comprehensive guides, and precise troubleshooting solutions.

Last Line No Longer Available" on iPhone 13: How to Fix It
Photo by Thai Nguyen on Unsplash

Users of the iPhone 13 or iOS 15 may have seen an error message appear that reads “Last Line No Longer Available.” This occurs when you attempt to call someone from the list of “Recent Contacts” on your phone.

Read on to learn how to get rid of it temporarily until Apple issues a software update to correct this flaw. Let’s start by figuring out what truly triggered the problem.

For a variety of potential reasons, your phone is unable to select a line to make that phone call on when you select a recent contact to dial-up. In this post, we go over each of these arguments.

Unfortunately, it’s possible that the mistake is brought on by activating your cell device’s eSIM while it’s still using a conventional SIM card. The issue arises because the device becomes perplexed about which SIM line to use amongst the two alternatives. In some cases, if you’ve enabled WiFi calling or network selection on your mobile device, you can also encounter the issue.

Let’s first go over the many causes of the issue so that we may have a better understanding of the situation. We will then move on to potential fixes from there.

What is the cause of the “Last Line No Longer Available” problem on the iPhone 13?

It’s possible that the issue will only arise when you wish to make a call. It’s possible that it has something to do with your iPhone’s e-SIM.

Recent iPhone models, like the XR model, typically offer the option of dual sims. Additionally, the issue only occurs when you make a call on your cell phone using the standard line setting.

Typically, iPhone users encounter an error message claiming that a fixed line is not now available. These are a few of the potential causes:

You should update your SIM card:

In this case, your service provider will inform you that you need to get a new sim card. However, if your service has experiencedIf your service has been terminated or will shortly expire, do not become anxious. Your provider may have some options for you in this situation. In that case, you may always choose another service.

Mistakes in your mobile application: Problems with mobile applications are rarely severe enough. However, even if they do, the situation is not too dire. So, don’t be alarmed; this blog has some advice. To fix it yourself, just follow these steps. Before moving on with these, make sure you write down or cloud backup your vital information. It is necessary because, once the problem has been resolved, accessing phone logs is difficult.

iOS problems: Every year, a new, updated version of iOS is introduced. Despite Apple’s best efforts, A few bugs always manage to slip through the cracks. All operating systems are released with small defects, which are rectified as soon as users become aware of them. Regular updates from the company that address these problems make the update stable.

Keep your cool until Apple fixes the issue and issues an update to repair it. Then and only then can iOS bug-related issues be resolved. In the interim, I’ve provided some fixes below to address the problem momentarily.

Dual-SIM Support: Apple was extraordinarily slow to add features to its iPhones that would allow for dual-SIM use. The introduction of dual-SIM support involved implementing new guidelines in the Phone app, one of which seems to be causing the error. Every time someone attempts to place A Every time someone attempts to call through the default line, the phone only displays an error message that says there was a problem.

Apple updates the iPhone with software that enables it to recognise your preferred methods of communication. As a result, you should decide which network you want to use with the Dual-SIM capability. The fact that the Phone app always uses the default line to dial a number could be the cause of the issue.

The message “Last Line No Longer Available” appears when this occurs. The next problem message is followed by the phone asking you if you “want to call using the remaining line?”

Updated carrier settings unavailable:

The dual-SIM support feature has long been eagerly anticipated by phone owners and Apple product enthusiasts. Additionally, the cellular network operator must support the dual-SIM integration.

Businesses involved in telecommunications networks have been planning for the upcoming transformation in light of this anticipation. Your network carrier’s settings must be adjusted for compatibility. To do this, adhere to the directions below.

 Switch on Airplane Mode on your iPhone. Method 1

On your cell phone, there are several quick cures for network problems. One of the simplest is to rapidly turn off your phone’s Airplane mode after activating it. When you switch off Airplane mode, the iPhone will attempt to reconnect to the mobile network after becoming detached from it. You can do this by swiftly turning on and off the Airplane mode in the Settings app of your phone.

If the Control Center app is installed, you may also use it to access the Airplane mode setting. To save battery life on your iPhone while travelling, you can also activate Airplane mode. To activate aeroplane mode and launch Control Center, swipe down from the upper right corner of the screen. Press it once again to turn it off.

When a device is set to Airplane mode, all wireless communication technologies—including cellular radio, Wi-Fi, and Bluetooth—are switched off. However, cellular service may soon be accessible on aeroplanes, and many flights now offer in-flight WiFi. Where does aeroplane mode go?

Even if you’ve never taken a flight, putting your device in aeroplane mode will conserve battery life by turning off the radios. It could possibly assist in extending the battery life of your device when none of those wireless radios are required.

Delete Call Logs Method 2:

This strategy came in second because it is the most useful for fixing the Last Line No Longer Available problem on iPhone. According to the Apple Community, clearing call logs resolved this problem. Go to the Recents section of the Phone App. click the Edit tab, then press Clear.

Although it is easy to delete your call logs, you should think twice before doing so since you won’t be able to get this data back. You should add any new unknown phone numbers that have been calling you frequently to your contact list.

Turn off and then turn back on your iPhone Method 3:

The majority of bugs’ problems can be fixed by simply restarting your device.

You may also be able to resolve the “Last Line No Longer Available” error on your iPhone by restarting it. When the phone is restarted, all of its background services are terminated, and the iPhone’s RAM and cache are cleared.

The restart should resolve any small problems with the iOS operating system or any other apps. Hold down the power button while pressing it down, and your phone will restart. To switch off your iPhone, slide the slider over.

To restart, continue holding the button. When the Apple logo appears on the screen, let go of the button.

Disable WiFi Calling using Method 4

On most iPhones, the WiFi Calling feature is frequently turned on by default. When using this function, calls will be placed and received over your personal wireless network rather than your service provider’s network.

You face the risk of receiving calls with poor call quality if you use WiFi Calling. You might wish to turn off the functionality for improved call quality. In certain cases, making a phone call while Wi-Fi calling is disabled has been successful. It’s easy to disable Wi-Fi calling.

Choosing “Settings.”

Choose Mobile Data from the menu.

Activate Wi-Fi Calling.

There is a toggle button on the iPhone. By switching the WiFi Calling option off, you can disable Wi-Fi calling.

Check For An Update Using Method 5

Verify the version of the iPhone’s updates to make sure your iPhone is current. Those flaws might have been fixed in the most recent iOS 15. You ought to at least try it. A flaw in the phone’s calling mechanism may have been introduced by a recent iOS software upgrade. The iPhone may be showing the “Last Line No Longer Available” error message as a result of this. The best solution in this case is to update your phone to the most recent iOS version. Every time Apple discovers a problem with its software, it upgrades the necessary devices to promptly correct the problem.

You can join by clicking. Use this link to register: Software from Apple. (Click “Sign in” if you registered in a previous year.)

To accept the agreement after reading it, click the “Accept” button.

To download and install the profile, visit apple.com/profile, sign in with your Apple ID, and then continue.

Navigate to Settings > General > Profile and choose Install to install iOS 15 or iPadOS 15.

After the installation is done, restart your iPhone.

Select Software Update under General from the settings menu.

Downloading and installing the application will take some time.

Update your carrier settings using method 6

If you wish to utilise your iPhone with a mobile network, you must configure your carrier settings correctly. Even after initial activation, network providers may modify a phone’s carrier settings in order to enhance the security and reliability of the network.

If you have this problem, your iPhone’s carrier setup may be glitchy. This error message reads, “Last line no longer available.” Thankfully, the network service provider also offers regular settings updates to address such problems, much like iOS updates.

If a carrier settings update is available, a daily pop-up message on the phone will say, “Carrier Settings Update: New settings are available.” It could be wise to do so right now.

How can you tell whether the carrier settings have been manually modified? There is no “Check for Carrier Updates” button on your iPhone. But there’s another method to go about it:

Open General settings in the Settings app on your smartphone, click on About, and then check to see whether a carrier settings update is available. If your iPhone needs a carrier settings update, a pop-up window will ask you if you want to install it. In 2020, it’s unlikely that your iPhone will experience any new carrier settings updates unless a pop-up appears after 15 to 30 seconds.

Enter the most recent information about your carrier in Settings > General > About.

If there is an uninstalled carrier update on your device, the notification “Carrier Settings Update” ought to appear on your screen. Select Update to make changes to your provider’s settings.

The “Carrier Settings Update” message may occasionally mean that Apple or your cellular service provider (such as Verizon, T-Mobile, AT&T, etc.) have updated the settings necessary for your iPhone to connect to your wireless service provider’s network.

If you’re an AT&T customer, a message that says “AT&T carrier update” or “ATT carrier update” may show.

Changing SIM cards may resolve the situation. Method 7:

If you have a dual-SIM iPhone, you might be able to place calls using a different SIM card without having to adjust any other settings.

Touch the I button, choose the default phone number option, then choose your new alternate number to utilise the new SIM for calls and text messages. Click on the main phone number at the top of the screen if you want to manually dial a number to make a call using the keypad.

Reset the network settings on your smartphone Method 8:

Most devices or services allow you to delete individual internet connections and linked devices independently. For instance, unused Wi-Fi networks can be disconnected without interfering with other Wi-Fi connections.

Your previously saved Wi-Fi login credentials, Bluetooth device pairings, mobile network preferences, and VPN information will all be lost if you decide to reset your network settings.

Resetting or reconfiguring your network settings on sometimes is a smart idea. You may do this by opening the Settings app, going to the General menu, picking “Transfer or Reset iPhone,” “Reset,” and then selecting “Reset Network Settings” from the list of options that appears.

Replace Your SIM Card Method 9:

The network is decommissioning the outdated technology as the world transitions to 5G connection.

The SIM card on the handset is from the 3G network era and needs to be changed. You must ascertain whether the carrier still accepts SIM cards from earlier generations. Call the standard customer care number and ask for more details.

Reset iOS settings completely Method 10:

If none of the other fixes for the “Last Line No Longer Available” problem work, try wiping all of your iOS’s current settings. Although your data is not destroyed, it is a good idea to make a backup. Do not be concerned that this problem will cause you to lose your saved settings. The iOS software allows users to recover all of their customised preferences after returning to the default settings.

Backup your phone data first using iCloud or your own PC.

You must first launch the “Settings” app in order to access it.

Select it by going to Settings > General.

You may find and choose the “Transfer or Reset iPhone” option by swiping down in the General menu.

From the drop-down option, pick “Reset”.

The option to “Reset All Settings” is available in the drop-down menu.

You need to enter the passcode in order to prove your identity.

Choose “Reset All Settings” to get started.

Wait until the Lock Screen shows on the iPhone after letting it finish the reset process. It’s time to charge your iPhone if the battery life has dropped to 30%.

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