Got a 2021 Ram 1500, same problem with my IPhone 12 Pro Max. My previous dodge didn’t have the message feature. My iPhone has iOS 14.5.1, I have the 12” Uconnect in the truck. Everything is working except messages, it’s grayed out. Going to try to pair my sons iPhone 8 Plus. My sons phone connects, but doesn’t allow for messages either.
If you click on the grayed out messages, a pop up comes up. It says, feature not available due to device settings. I’ve checked my device settings and have not found the issue yet.