KingdomTaurusNews.com - Fixed an error on iPhone “Last Line No Longer Available” when making calls on iPhone with iOS installed. Summarized from various sources, “Last Line No Longer Available” on iPhone appears due to a bug when having trouble detecting the default or preferred line when trying to make a phone call. Here's how to fix "Last Line No Longer Available" on iPhone: Airplane Mode on iPhone You can turn Airplane Mode on and off on your iPhone, to try to fix the “Last Line No Longer Available” problem. Restart iPhone The next step, to overcome the "Last Line No Longer" on the iPhone is to open the Settings application then select General and select Shut Down and then reactivate it. Update Carrier Settings on iPhone To update carrier settings. Go to General - About - in the Carrier section is there "Carrier Update Available". Carrier settings allow your carrier provider to update your carrier network and related settings to improve connectivity and cellular network performance and can add support for new features such as 5G or Wi-Fi Calling. [caption id="attachment_25283" align="alignnone" width="1200"] Carrier Settings Update iPhone[/caption] Disable Automatic in Network Selection To disable Automatic in Network Selection, go to Settings - Cellular - Network Selection and turn off the Automatic button in the Network Selection section. Update your iOS iPhone To perform a software update on the iPhone by opening the Settings app then General and select Software Update. [caption id="attachment_21331" align="alignnone" width="1200"] apple ios-15[/caption] We hope this fixes the iPhone “Last Line No Longer Available” Error.