I've no idea about any physical connections, but if you are connecting via Bluetooth I may have the answer.
My Fabia is 2015, and connected well with my old phone. A couple of years ago when I got a new phone, I could only connect to answer or end calls. No phone book, no text messages on screen.
After a lot of digging, I found that the new phone used Bluetooth v1.4, the car 1.3. The new protocol is not backwards compatible.
With my Android phone, I found a way into the deep (developer) settings, and set the new phone to use 1.3, and I then got phone book, call logs, dialling form the car, and compile/send/receive/read texts on the car screen.
I've never streamed music from the phone, so no idea whether that is affected, and with the reversion to 1.3, no idea whether some new functionality is lost.
So that may be a starting point, but with an Apple device, reverting to the earlier Bluetooth may be more difficult, or not possible. Might need some more research, maybe on Apple forums, rather than car forums.
Good luck. If you find a solution, please post it here, as this is not the first time this problem has popped up. As cars get older, and phone software people race ahead to develop ever more complications, such problems will continue with older cars, possibly everything oplder than 3 years.