Exclamation mark badge on iPhone Messages app icon
Since I upgraded my iPhone 6s to iOS 11 (it is now on 11.2.1) there has been an exclamation mark badge on the Messages app icon for the first 10 seconds after powering the iPhone on.
I could live with that if it weren’t for another, likely related, issue: After powering the iPhone on, the Messages app does not show any iMessages sent to me while the phone was off. I can see those iMessages on my iPad and Mac, just not on my iPhone.
I have tried everything I could think of: Reset network settings; Restored the iPhone and applied latest backup; Turned iMessage of and on multiple times. All to no avail.
Does anyone one have an idea of how to troubleshoot the exclamation mark issue I am experiencing?
Thanks.