How to Fix ‘Last Line No Longer Available’ on iPhone 13

How to Fix ‘Last Line No Longer Available’ on iPhone 13
Photo by Howard Bouchevereau on Unsplash

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This error mostly affects users of iOS 15 and iPhone 13. There’s an error message that says “Last Line No Longer Available” when you try to call someone from your Recent Contacts list.

Below we have discussed how you can get rid of the problem until Apple publishes a solution. But first, let’s figure out exactly what went wrong in the first place.

So what is the error about?

Unfortunately, the device is unable to select a line to make the phone call you’ve requested for X number of reasons (discussed below), which is why you’re seeing this error message. The eSIM may have been activated after a certain upgrade, however, that isn’t necessarily the cause of a problem. We’ll teach you how to fix the error message in question in this article, so please read on and take notes.

As it turns out, if you activate your phone’s eSIM while also using a conventional SIM, the device may be confused about which line to use when you try to make a call, resulting in an error. In some circumstances, the problem can also emerge if your network selection or Wi-Fi calling is enabled.

In order to better comprehend the situation, let’s first go over the many sources of the problem. From there, we will go on to possible solutions.


What Causes The Error “Last Line No Longer Available” on iPhone 13?

Only when you are attempting to make a call will you see the problem pop up. It is quite likely connected to the e-SIM that is found on iPhones.

Dual SIM functionality is available on more recent handsets, beginning with the iPhone XR. In addition, the iPhone will only generate an error when it is used to make a call from the default line.

On iPhones, users frequently experience the error “Fixed Line No Longer Available.” The following are some of the possible causes for it to occur:

Outdated SIM Card:

The provider at some point will begin notifying customers that they need to obtain a new card. Do not get very concerned if the carrier has already discontinued the services or plans to do so in the far future. You have a few different options, which carrier has provided for you, or you can move to a different network.

Phone App Issues:

It’s not very often that the Phone app will have problems with it. You are in luck since you can use the solution to fix the problems with the Phone app, and we will demonstrate how to do so below. You will be unable to retrieve your call logs or call history data from the iPhone, thus it is important that you write down the relevant numbers.

iOS Bugs:

Apple puts out a brand new version of iOS software every year. It is not without a few negatives, however. You can take every operating system in the world and determine how much time it takes to stabilize the software for that operating system.

You will need to be patient until the company addresses the problem and makes an update available before you can get the iOS-related issues fixed. In the meantime, I have provided a remedy for you below; if you are having problems with iOS, you may check it out.

Dual-SIM Technology:

When it came to incorporating Dual-SIM technology into the iPhones, Apple was notoriously slow. They have implemented a few guidelines within the Phone app, and it appears that one of these guidelines are creating the issue. The user makes an attempt to make the call using the default line, but the Phone app notifies us that there has been a problem.

The iPhone is interested in learning which method of communication you use most frequently. You can choose which network to use with the Dual-SIM. There are problems with the Phone app when attempting to call a contact on the default line.

This causes the message “Last Line No Longer Available” to appear. Do you want to call using the remaining line that you have available?” error message.

Outdated Carrier Settings:

Dual-SIM support for the iPhone has been a feature that Apple customers have been waiting a long time for. The integration of dual SIM cards requires support from the mobile network provider.

There is no shadow of a doubt that the firms involved in telecommunications have made preparations for the forthcoming transition. You will need to adjust the settings for your carrier on the iPhone, and we’ve have provided instructions for doing so below.


Method 1: Turn On/Off Airplane Mode

If you’re experiencing network problems, there are a number of simple fixes you can try, one of which is temporarily turning on Airplane mode and rapidly turning it off.

This will cause your iPhone to disconnect from its cellular network and then try to reconnect with it again once it has been unplugged. Start by turning on the Airplane Mode switch in the Settings app, and then turning it off to complete the process.

If you have the Control Center app installed, you may also turn on or off “Airplane Mode” to save battery life while traveling. Open the Control Center by swiping down from the top right and tapping on the Airplane icon at the top left corner. Then press on it again to turn it off.

Cellular radio, Wi-Fi, and Bluetooth—everything related to wireless transmission—are all turned off when a device is in Airplane mode. But many planes now have in-flight Wi-Fi, and cellular access may soon be available on planes—so where does airplane mode go?

Even if you’ve never taken a plane trip, turning off your device’s radios in airplane mode will save your battery life. When none of those wireless radios are needed, it might help extend the battery life of your device.

Method 2: Clear Call Logs

We selected this approach second since it’s the most practical way to solve Last Line No Longer Available error on iPhone. This issue was reportedly fixed by cleaning call logs in the Apple Community.

In the Phone App, go to the Recents tab, tap Edit, and then clear.

Even though deleting your call logs is a simple task, you should pause before doing so because you won’t be able to retrieve this log again. Unknown phone numbers that you’ve been getting a lot of lately should be added to your contact list.

Method 3: Restart Your iPhone

Almost all issues caused by bugs can be resolved by just restarting your device.

Restarting your iPhone may help if you keep getting the ‘Last Line No Longer Available’ error when making calls. Restarting a device clears all of your system’s background services and clears the cache and RAM on your computer.

This should be enough to fix any small issues with your iPhone’s operating system and apps. Press and hold the Power button until you see a slider that says “Power off.” Slide the slider over and wait for your iPhone to turn off.

Press and hold the Power button again until the Apple logo appears to restart the device, then release the button.

Method 4: Disable WiFi Calling

The WiFi Calling capability is often activated by default on most iPhones. Calls made and received using this feature will use your own wireless network, not the one provided by your service provider. If you use WiFi Calling, you run the risk of having poor call quality. For better call quality, you might want to disable the functionality.

Turning off Wi-Fi calling and making a phone call has worked in some circumstances. Disabling Wi-Fi calling is simple.

  • Select “Settings.”
  • Select the Mobile Data option.
  • Launch Wi-Fi Calling.
  • On the iPhone, you will find a toggle button. Turn off Wi-Fi calling by toggling the WiFi Calling option off.

Method 5: Check For An Update

Make sure your iPhone is up to date by checking the iPhone’s updates’ version. Those vulnerabilities may have been fixed in the current iOS 15. You should at least give it a shot.

Your iPhone may have displayed the ‘Last Line No Longer Available’ message as a result of a bug introduced by a recent software upgrade. If this is the case, updating your iPhone to the latest iOS version is the best way to fix it. When a problem is found in Apple’s software, the company releases an update to iPhones almost immediately.

  • Subscribe by clicking Sign Up on this link: Apple Software Program. (If you registered in a prior year, click ‘Sign in.’)
  • After reading the agreement, click the ‘Accept’ button to accept it.
  • Go to on your iPhone, sign in with your Apple ID, and then download and install the profile.
  • To install iOS 15 or iPadOS 15 software, go to Settings > General > Profile and select Install.
  • Restart your iPhone after the installation is complete.
  • Go on the settings menu and select General > Software Update.
  • Take a moment to download and install the application.

Method 6: Update your Carrier Settings

If you want to use your iPhone with a mobile network, you’ll need to make sure it’s set up with the proper carrier configurations. Network providers can change some of the iPhone’s carrier settings after it has been activated for the first time to improve the network’s stability and security.

There may be an issue with the carrier configuration on your iPhone if you get the message “last line no longer available.” Fortunately, your service provider may also provide updates for your carrier settings, just like with iOS upgrades.

Daily pop-ups on your iPhone will read, “Carrier Settings Update: New settings are available,” if a carrier settings update is available. Now might be a good time to do so.”

How do you know when the carrier settings have been changed manually? Your iPhone doesn’t have a “Check for Carrier Updates” button. However, there is a second way to do this:

Open the Settings app on your iPhone and go to General > About to see if a carrier settings update is available. If a carrier settings update is available for your iPhone, a pop-up window will appear asking if you wish to install it. Unless a pop-up displays after 15-30 seconds, it’s likely that your iPhone won’t receive any new carrier settings changes in 2020.

On your iPhone, go to Settings > General > About and update your carrier information.

Your screen should display the “Carrier Settings Update” message if there is an uninstalled carrier update on your device. To update your provider’s settings, select Update.

Sometimes, when you receive the alert “Carrier Settings Update” on your iPhone, Apple or your wireless service provider (Verizon, T-Mobile, AT&T, etc.) have released an update with updated settings that will let your iPhone connect to the network of your wireless service provider.

A notice like “AT&T carrier update” or “ATT carrier update” can appear if you’re an AT&T customer.

Method 7: Try switching between SIMs

If your iPhone has a dual-SIM slot, you can try using a different SIM card for phone calls without having to alter any other settings.

It is possible to change the default phone number for calls and messages by touching on the “i” button and selecting your default phone number on the screen, and then tapping on your alternate number. In order to use your alternate SIM while manually dialing a number using your phone’s keypad, go to the top of your screen and tap on your primary phone number.

Method 8: Reset Network Settings

Individual internet connections and connected devices can usually be deleted individually from most devices or services. Wi-Fi networks that are no longer used can be removed without disrupting other Wi-Fi connections, for example.

In contrast, if you choose to reset your network settings, you will lose all of your previously saved Wi-Fi login information, Bluetooth device pairings, mobile network choices, and VPN information.

Resetting your network settings once in a while may not be a terrible idea. To do this, navigate to Settings > General > Transfer or Reset iPhone > Reset and select Reset Network Settings from the popup menu.

Method 9: Switch To A New SIM Card

As the world moves to 5G connectivity, the network is retiring the old technology.

The device’s SIM card is from the 3G network period, and it needs to be replaced. You need to find out if the carrier is still supporting SIM cards from previous generations or not. Ask for more information by calling the default customer service number.

Method 10: Reset all settings on iOS

Try resetting all of your existing settings on iOS without destroying all of your data if the ‘Last Line No Longer Available’ remedy doesn’t work. You should not be concerned about losing all of your iPhone’s saved settings as a result of this problem.

Using the iOS software, users can go back to the default settings and have all of their customized preferences restored.

  • You should back up your iPhone data to either iCloud or a local machine using iTunes.
  • In order to access the “Settings” app, you must first open it.
  • Go to Settings > General and select it.
  • Down swipe. When you’ve finished, select “Transfer or Reset iPhone.”
  • Select “Reset” from the drop-down menu.
  • “Reset All Settings” is available in the drop-down menu.
  • To verify your identity, you must enter the passcode.
  • To begin, select “Reset All Settings.”

Allow iPhone to complete the reset process and wait until the Lock Screen appears on the device. If your iPhone is down to 30% battery life, it’s time to charge it.


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