Can’t transfer data from old iPhone!
According to Apple’s statement, iPhone 15 warns to update to iOS 17.0.2 during the initial setup process before starting data transfer. However, Apple iPhone 15 users say that the iOS 17.0.2 update was not available during installation.
If you skip the update during the initial installation process, you have two options. The first option is to restore the iPhone 15 by connecting it to the computer before the installation process is completed. The second option is to set up the iPhone 15 as new without transferring any of your data, and then install the update and transfer your data from the old phone.