Factory reset issue, please help
I was given an iPhone by a friend in another state who didn’t need it and offered it to me as an upgrade, my phone finally conked out and I’m trying to switch them around, my friend doesn’t remember their info, they’ve gotten a different provider since then. The phone has a lock screen me and my friend don’t remember the password to, I don’t have a computer or iTunes to reset it and I don’t have the iCloud info to reset it. How can I do a factory reset?