If you’re returning, selling, or giving away your device, you must turn off Activation Lock. You’ll have to erase all content and settings from your device before handing it over. Keep in mind, erasing this will completely erase your device, turn off Find My, and remove the device from your Apple ID account.
To erase all content and settings, from your Home screen:
- Tap Settings, then tap General.
- Tap Reset, and finally tap Erase All Content and Settings.