Dual SIM iPhones are great until the “Last Line No Longer Available” error message appears on the screen while you’re making a call.
This article explains what might cause your iPhone to display this error, and how to fix it so you can make calls without any problem.
Why Does My iPhone Say “Last Line No Longer Available”
Your may receive the Last line No Longer Available error message on your iPhone due to iOS bugs when using e-SIM on your device.
Moreover, most users encounter the error when they try to call back or redial a contact from their recent calls list.
Although you can still call your contact using the other SIM card, it is irritating to encounter the “Last Line No Longer Available” for several reasons.
First, you would like to use the default SIM card. Second, you might not want to contact the caller using another line.
For example, you wouldn’t like your clients to have your private number, which you use to call your family and friends.
Luckily, there are several proven fixes that you can implement to correct the problem. Here’s what you should do right now to fix “Last Line No Longer Available” on your iPhone.
How to Fix “Last Line No Longer Available” on iPhone
If your iPhone displays the “Last Line No Longer Available” message when you try to make a call, you need to clear the Recent Call logs.
Open the “Phone” app and tap the “Recents” tab. Next, select the “Edit” button in the top-right corner of the screen. Select “Clear” followed by “Clear All Recents” to confirm your action.
1. Restart Your iPhone
Let’s start with the simplest solution. Many errors are automatically fixed when the iOS 15 device reboots, including the “Last Line No Longer Available” error.
Hence, testing complicated methods before restarting your iPhone is not a good idea. This step-by-step guide will show you how to restart your iPhone, regardless of the model.
2. Activate Airplane Mode
The second method which preserves all the information on your phone is turning on the Airplane mode and switching it off again.
Additionally, this action will basically reset your SIM card configuration and solve possible maladjustments between your device and the cellular network.
Note: Your SIM card might provide cellular data, and you can receive calls. Still, some minor errors, such as the one at hand, might recur.
3. Clear Recent Calls
Although you might frown upon deleting your recent call logs at first, it is an easy way to fix the error.
Furthermore, the problem will most likely persist, and you’ll just have to put up with the error every time you want to call someone from the recent calls list. Follow these steps to clear the recent calls:
1. Open the Phone app from your home screen.
2. Go to Recents.
3. Tap Edit at the top right corner of your screen.
4. Select Clear at the upper left corner of the screen.
5. At the bottom of the screen, tap Clear All Recents to confirm your choice.
4. Turn Off Contacts Suggestion From Settings
Your iPhone can extract data and contact information from other applications. However, sometimes the iOS fails to load the contacts properly. So, in case the previous fixes haven’t solved the issue, try the following steps.
1. Launch the Settings app on your iPhone.
2. Navigate to Contacts.
3. Tap Siri & Search.
4. Toggle off Show Contacts Suggestions.
5. Update Carrier Settings
Check to see whether your iPhone needs a carrier update. Open the Settings app, then select General > About.
Wait up to a minute after scrolling down to the Carrier section. To install a carrier update, tap Update when you see a prompt saying “Carrier Update Available.”
6. Disable Wi-Fi Calling
While Wi-Fi Calling allows you to make and receive phone calls over Wi-Fi in areas where cellular signals are weak, it might also cause conflicts and result in the “Last Line No Longer Available” error message.
You can fix that by opening the Settings app and choosing Cellular > Wi-Fi Calling. Next, disable Wi-Fi Calling by turning the switch off.
7. Disable Automatic Network Selection
A feature called Automatic Network Selection could also be behind the “Last Line No Longer Available” iPhone error.
Dual-SIM iPhones experience problems with this feature, which prompts your iPhone to decide which network it should connect to.
So you’d want to make sure to turn that feature off on your iPhone. You can disable Automatic Network Selection by opening the Settings app and selecting Cellular > Network Selection. Then, turn off the switch next to Automatic.
Once you’ve turned off Automatic Network Selection, pick the network you want to use.
8. Reset Network Settings
Switching airplane mode on and off should reset your network settings to your last preference.
However, using this method will reset the network settings back to their initial status, and operator configurations will apply.
Follow these steps to reset network settings:
1. Open the Settings app.
2. Select General.
3. Scroll down to Transfer or Reset iPhone.
4- Select Reset at the bottom of the screen.
5. Tap Reset Network Settings.
6. Confirm your choice by tapping on the Reset Network Settings prompt.
9. Update Your iPhone Firmware to the Latest Version
At the time of publishing this article, the problem persists with the latest firmware. However, Apple might have fixed the error in later iOS versions.
Therefore, you can try updating your device to solve the “Last Line No Longer Available” error.
1. Go to the Settings app.
2. Locate the General and tap on it.
3. In the following panel, select Software Update.
4. You can view the latest iOS on this page. Click Download and install to update your iOS firmware.
5. Tap Restart if the Restart Required prompt appears on your screen.
Final Thoughts on Last Line No Longer Available on iPhone
Like all flowers, the iPhone has its thorns. Although the iPhone has had a few subtle bugs since the introduction of iOS 15, the “Last Line No Longer Available” has proved to be one of the most annoying errors.
We hope your phone is working properly now that you have tried the above methods. However, if the error continues to appear, contact Apple Support or your network operator for help.
If you have any feedback or questions, then please don’t hesitate to leave a comment below.