How to Factory Reset an iPhone

Select the Settings App.

If you are unsure where your Settings App is, swipe all the way to the left and use the Search function to pull it up for you.

Select General. It will likely be along the bottom edge of the first screen.

Scroll to the bottom of the following menu. Tap the Reset option. Depending on the version of iOS your phone is running it may alternatively read Transfer or Reset iPhone.

Select the Erase All Content and Settings option.

The iPhone will confirm what information will be removed during this process. Click Continue at the bottom of the screen.

It will confirm one final time that you want to Erase it. It may ask for your Apple ID password to authenticate.

The phone will restart to an Apple logo. A progress bar will appear and fill as the the phone removes data and reinstalls the Operating System.

It may restart a few times during the process, or appear to be off for longer than usual between restarts.

After patiently waiting, the device will restart to the Setup Assistant allowing you to start configuration from scratch or someone else to do the same.