Asked to sign into an Apple ID that is not mine when transferring data between iPhones
I bought a new 13 Mini today direct from Apple. I transferred my data from an SE 2020 (also bought direct from Apple) to the new iPhone using the automatic transfer feature. All went fine. I also have an SE 1st gen (second hand) and wanted to set this up as a new backup device with the same iCloud account, using the new iPhone 13 Mini as the transfer source.
When I started to transfer data from the iPhone 13 Mini the SE 1st gen setup asked me to sign in to an iCloud account that is not my own and I have never heard of but which the message states has previously made purchases in the app store. I skipped this step and the SE 1st gen continued the transfer and appears to have setup correctly.
The question is... where does the unfamiliar iCloud account come from and does it present any threat to either my new 13 Mini or old SE 1st gen? My guess is that it is the ghost of the SE 1st gen's original owner which is somehow still tied to the serial number / device?
iPhone 13 mini, iOS 15