j-a-m-n,
To reset your device follow these steps.
Wipe all content and settings from iPhone
- Go to Settings > General > Transfer or Reset iPhone.
- If you’re erasing your iPhone because you’re replacing it with a new iPhone that you have on hand, you can use extra free storage in iCloud to move your apps and data to the new device. Tap Get Started, follow the onscreen instructions, then return to Settings > General > Transfer or Reset iPhone.
- Tap Erase All Content and Settings.
When iPhone restarts with all content and settings erased, you have the option to set up iPhone as new or restore it from a backup. See Turn on and set up iPhone.
Note: If you’re asked to enter your passcode and you’ve forgotten it, see Reset the passcode. If you’re asked to enter your Apple ID password and you’ve forgotten it, see the Recover your Apple ID website.
Once your iPhone shows the hello screen all data has been removed.
Best Regards,
Adin F