Let's workaround that pesky error message for now
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ARRIS SURFboard SBG7600AC2 DOCSIS 3.0 Cable Modem
The last line no longer available iPhone 13 error is linked to the eSim and a related bug in iOS 15. Whilst we’ve not had any word from Apple on a hotfix or iOS 15.0.1 update as of yet, fingers crossed this will be fixed shortly. That doesn’t really help out victims of the last line no longer available iPhone 13 error in the interim though.
We’ve put together a shortlist of troubleshooting tips to help get around the last line no longer available iPhone 13 error for now. Let’s get into it:
The cure-all for electronics. Simply restart your device.
With this error being an eSim related issue, it could be that your SIM card isn’t inserted correctly. Taking it out and putting back in puts a big green checkmark against this troubleshooting point.
Although this issue is mostly related to the eSim, a quick network connection refresh isn’t going to harm. Simply go to settings, toggle on Airplane mode, wait for a minute then toggle back off.
The last line records are kept inside your call log. Go to the recents tab in your iPhone 13 call app, then tap edit in the top right corner. Next, tap Clear on the top left, followed by Clear All Recents.
It might be a good idea to reset your network settings. There may be a setting that you or your carrier has enabled or disabled that is now causing issues with iOS 15 WiFi Calling. Go to Settings > General > Transfer Or Reset iPhone > Reset> Reset Network Settings.
