iPhone 6S Stuck at iOS 12.4.1-Only Update Available Is 14.4.2
We have 2 iPhone 6S purchased new in January 2019.
We have not been offered any iOS updates since iOS 12. Software Update only has 14.4.2 available.
From what I have read elsewhere we should be able to catchup with iOS 12.5.2 but I cannot find a way to make it happen.
Any ideas why Apple isn't offering us the iOS 12 update and is there a way to fix this?
iPhone 6s