Four quick steps before you ship or drop off. It protects your data and gets you paid faster.
Back up to iCloud or a computer, then turn off Find My and sign out. We can't process a locked device.
Settings›your name›Find My›Find My iPhone›OffSettings›your name›Sign OutBack up to your Google account, then remove the account and turn off Find My Device. We can't process a locked device.
Settings›Security›Find My Device›OffSettings›Accounts›Google›Remove accountBack up anything you need, then sign out of every account tied to the device (Apple ID, Google, Microsoft, Nintendo, PlayStation or Xbox) so it is not locked to you.
Erase all content and settings to protect your privacy.
Settings›General›Transfer or Reset iPhone›Erase All Content and SettingsSettings›System›Reset Options›Erase All DataLook for›Reset›Factory reset›in SettingsWipe your device down, remove the case and SIM card, and double-check for damage so your quote matches its condition.
Either way you get the same price. Pick whichever is easier for you.