7 Fixes for the “Last Line No Longer Available” Error on iPhone

From communication and entertainment to productivity and personal organization, we rely on our iPhones to keep us connected and informed. However, like any other technology, iPhones are not immune to occasional glitches and errors that can disrupt our user experience.

iPhone keeps saying “last line no longer available”. Well, this peculiar issue typically arises when users attempt to send a text message or place a call, only to be met with a sudden interruption and an error message stating that the last line of the message is no longer available. If you’ve ever experienced this perplexing error, rest assured that you’re not alone.

last line no longer available

Image source: Tech Latest

Fortunately, several effective fixes and workarounds can help you resolve the “Last Line No Longer Available” error on your iPhone. In this blog post, we’ll explore various causes behind this error and provide you with a comprehensive guide to troubleshooting and resolving the issue.

Let’s get started.

Also read: 10 Best Lock Screen Widgets Apps for iPhone And iPad

What is the “Last Line No Longer Available iPhone” Error?

If the thought of the last line no longer available iPhone meaning just crossed your mind, we’re here to help you. The “Last Line Not  Available” error on an iPhone is an issue that occurs when users try to send a text message or make a call.

The error typically occurs on iPhones with dual SIM functionality, indicating that there is a problem with one of the SIM cards or the associated network connection. This error message suggests that the iPhone can no longer access or recognize one of the lines (phone numbers) associated with the SIM cards.

While the exact cause of this error may vary, it is commonly associated with software glitches, network connectivity issues, or conflicts with third-party apps.

How to Fix the Last Line Not Available Error on iPhone?

Solution 1: Switch Phone Lines Manually

To resolve the “Last Line Not Available” error on your iPhone, you can follow these steps:

When dialing a new number, locate the current line at the top of the screen and tap it. Then, select the alternative line you wish to use.

Switch Phone Lines Manually

If you are making a call from your “Favorites” or “Recents” lists, locate the Info button next to the contact and tap it. From there, you can choose the desired number to use for the call.

By following these instructions, you will be able to switch between different phone lines or numbers on your iPhone, potentially resolving the “Last Line Not Available” error and enabling you to make calls or send messages without any interruptions.

Also Read: 8 Best Apps to Merge Videos on iPhone and iPad

Solution 2: Toggle the Airplane Mode On and Off

Another effective solution to resolve the “Last Line Not Available” error on your iPhone is to toggle Airplane Mode on and off. This method can help refresh the network connections and potentially fix any temporary network-related issues that may be causing the error.

Here’s how you can turn on and off Airplane Mode:

Step 1: Swipe up from the bottom of your iPhone screen or swipe down from the top-right corner (depending on your iPhone model) to access the Control Center.

Step 2: Locate the Airplane Mode icon and tap on it to turn it on. This will disable all wireless connections on your device.

Toggle the Airplane Mode On and Off

Step 3: Wait for about 10 seconds and then tap the Airplane Mode icon again to turn it off. This will re-enable the wireless connections.

Step 4: Once Airplane Mode is turned off, check if the “Last Line Not Available” error persists while sending a message or making a call.

Toggling off the airplane mode and enabling it can help resolve any temporary network glitches that may have been causing the error. If the error continues to occur, proceed to the next solution.

Solution 3: Restart your iPhone

If the “Last Line Not Available” error on your iPhone persists, restarting your device can often work wonders in resolving various software-related issues. Restarting helps refresh the system and clears temporary data that might be causing the error.

To restart your iPhone, follow these steps:

Step 1: Press and hold the power button (also known as the Sleep/Wake button) located on the side or top of your iPhone.

Step 2: After a few seconds, an on-screen slider will appear with the message “Slide to power off.”

Step 3: Drag the slider to the right to power off your iPhone.

power off your iPhone

Step 4: Once your iPhone is completely powered off, wait for a few seconds. Press and hold the power button again until the Apple logo appears on the screen.

Step 5: Release the power button and wait for your iPhone to restart.

Once your iPhone has restarted, check if the “Last Line Not Available iPhone” error still occurs.

Solution 4: Update Carrier Settings

To address network compatibility issues and potentially resolve the “Last Line is Not Available” error on your iPhone, try updating your carrier settings. These updates, provided by your cellular network provider, improve network connectivity, voice, data, and messaging settings.

Here’s how to update your carrier settings:

Step 1: Ensure your iPhone is connected to a stable Wi-Fi or cellular network.

Step 2: Open “Settings” on your iPhone.

Step 3: Scroll down and tap “General”. Select “About.”

Update Carrier Settings

Step 4: If a carrier settings update is available, you’ll see a prompt to update. Tap “Update.

Step 5: Wait for the update to download and install, which typically takes a few minutes. If required, restart your iPhone.

Check if the “Last Line Not Available” error still occurs. Updating carrier settings ensures your iPhone has the latest configurations for optimal network performance

Solution 5: Change Cellular Data Settings

f you encounter the “Last Line No Longer Available” error on your iPhone while using your default or preferred line for cellular data access, you can resolve it by adjusting the settings. Here’s how:

Step 1: Launch the Settings app on your iPhone and tap on “Cellular.”

Step 2: Select “Cellular Data.”

Cellular Data

Step 3: Choose the alternative phone line you wish to use or disable cellular data entirely by selecting “Off.”

By following these steps, you can switch to a different phone line for cellular data access or disable cellular data altogether, which may help eliminate the “Last Line Not Available” error on your iPhone.

Also Read: 6 Ways To Fix App Store Missing On iPhone/iPad

Solution 6: Disable Automatic Network Selection

To address the “Last Line Unavailable” error on your iPhone, try disabling automatic network selection. Simply go to Settings > Cellular > Network Selection, and turn off the automatic option.

Disable Automatic Network Selection

Instead, manually select your preferred network from the list provided. This can help resolve any network compatibility issues and potentially eliminate the error.

Solution 7: Disable WiFi Calling

To address the “Last Line is Not Available” error on your iPhone, disable Wi-Fi Calling. Go to Settings > Phone (or Cellular) > Wi-Fi Calling and turn it off.

Disable WiFi Calling

This can help resolve conflicts with your network settings and potentially resolve the error.

Also Read: iOS 17 Promises to Transform Your Locked iPhone into Smart Display


The “Last Line No Longer Available” error on iPhones can be a frustrating experience that interrupts your ability to send messages or make calls. However, with the solutions provided in this blog, you can troubleshoot and resolve this error effectively.

These steps address various potential causes, such as software glitches, network conflicts, and compatibility issues. If one solution doesn’t work, try the next until the error is resolved.

Stay connected, stay productive, and enjoy a hassle-free iPhone experience! Follow us on social media – FacebookInstagram and YouTube.

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