I recently had to send my iPhone 11 Pro to Apple due to some issues with the lightning connector. Since I didn't want to be without a phone for 2 weeks, I opted for the express replacement, which sends me a "new" phone to replace my old one. When the replacement arrived it looked new and had all the typical plastic wrapping on it. So I got started setting it up and transferring my backup data. As it progressed, two odd things happened; first, I discovered a Shanghai Transit Card listed under my Apple Pay account. Next, I was asked to enter the password for my Apple ID, but the apple ID that appeared was not mine. This all freaked me out a little, but as the restore-from-backup process continued, these things disappeared. I'm assuming that the replacement phone I received was not new, but rather a refurbished one that belonged to someone from (or had traveled to) China.