No Service issue on iPhone 6 plus after updating to iOS 12.1.4
A few days after I updated my iPhone 6 plus to iOS 12.1.4, it started showing a '! No Service' on top left. All cellular functionalities were broken by it - unable to make phone calls or send/receive text.
I took it to the Apple Store where they tried to reset my phone via restore mode. But the restoration resulted in a worse state that got the phone stuck in a "Unable to Activate" mode. At that point, they gave me only one option - pay $330 to get a replacement device! They acknowledged that the issue was caused by the iOS 12 upgrade but still they won't take responsibility to fix it.
I found out that Apple has a program to fix the same issue for iPhone 7 (https://www.apple.com/support/iphone-7-no-service/ ) - but not for iPhone 6 plus!! This does not make any sense. It's time to take responsibility!
iPhone 6 Plus, iOS 12