My 3nd gen SE doesn’t have CarPlay

Check:

Settings>ScreenTime>Content&Privacy Restrictions>Allowed Apps>CarPlay... = ON (green).

When done, restart your iPhone.

Regards

Giulio

1. Is this your corporate iPhone? Then please contact the system administrator of your corporate
2. If it is your personal device, in that case, do you have any profile installed by your corporate/organisation/enterprise/School Management?
   1. Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
   2. Or please contact the system administrator of the organisation who provided the profile to you
3. If you want to turn on SSL trust for that certificate, go to Settings > General > About > Certificate Trust Settings. Under "Enable full trust for root certificates," turn on trust for the certificate. Apple recommends deploying certificates via Apple Configurator or Mobile Device Management (MDM). --> Trust manually installed certificate profiles in iOS and iPadOS ...

You will have the list of CarPlay compatible devices here --> CarPlay - iOS - Apple

Yes, I'd try to update your device to the latest iOS version (now 16.1.1).

Please keep me informed.

Thanks

Glad you worked it out :)

Have a nice day.

Giulio