https://wccftech.com/ios-14-bug-causing-no-message-notifications-on-new-and-older-iphone-models/

It's been more than a month since Apple released its latest iOS 14.2 firmware update. However, the build is causing issues pertaining to iMessages and SMS Texts. The issue is that when a message hits your iPhone, there is no notification or a red badge on the app to indicate it. Seemingly, this is an iOS 14 bug that corresponds to messages on the iPhone.

Previously, the issue was only found on the iPhone 12, iPhone 12 mini, iPhone 12 Pro, and the iPhone 12 Pro Max, as reported by MacRumors. However, this is clearly not the case as the issue is persistently plaguing older iPhone models as well. This iOS 14 bug pertaining to messages is causing a lot of people to seek workarounds on Apple's support forums. However, at this point in time, there is no fix for the issue from Apple, not even a temporary workaround to get the notifications going until the new update arrives.