Help
I bought a second-hand iPhone 15 Pro. I updated it to iOS 26.6, factory reset it when I picked it up, signed into my account, and when I got home, I updated it to iOS 27. There are no other accounts logged in, no replaced parts, and no physical flaws. Regarding the battery, IMEI, and blacklist status, everything is clear and clean. Is there anything else that could go wrong or that I should check? Everything else seems fine—cameras, sound, microphone, and buttons