The texts I receive are going to another iPhone
My texts I receive go to another phone
[Re-Titled by Moderator]
iPhone 12, iOS 15
Question marked as
Text messages (as different from iMessages) go to a phone number, and therefore to the phone that has the SIM card (or eSIM) that ties the device to the phone number through the mobile service provider.
iMessages go to an Apple ID account, not a specific phone per se (but possibly to multiple devices).