EdwinG
Ambassador
iOS 17.0 was released in September 2023, and 17.4 contains changes to the iMessage protocol.I’m 16.4 was that the last one before the new one? I’m reluctant to be the first out anymore in case of issues.
It might be worth trying an update to 17.4.
The caveat: You cannot roll back to iOS 16.4 once upgraded, because Apple doesn’t provide the necessary signature for it to install.