Recently upgraded from iPhone 13 Pro Max to 15 Pro Max and downloaded the beta software when I first got it. It was a while before I realized I couldn’t ring or use precision finding on my AirTag even though I could see the location of the AirTags. After resetting both my AirTags and iPhone I decided to put my phone into recovery mode and downgrade to iOS 18.1. The problem was fixed. The beta software is not AirTag friendly.