Red exclamation mark again
Red exclamation mark on messages every morning and none of the already suggested fixes works! It only shows up on iPhone, not iPads and yet message works on all of them.
It would be better if you can please re-post with a screenshot, in order to understand the phenomenon better. Images/pictures speak louder than words.
Please understand this is a public forum: While attaching a Screenshot, do not provide any personal credentials, such as Card detail, email id, apple id, IMEI number, Serial Number, Phone number, Order ID, if you are sharing a map ensure your location is not identifiable, etc.