The iPhone comes with a nifty feature allowing you to completely wipe the device’s memory using its built-in settings. This option restores the device to factory settings. This ready-to-go feature comes in handy if you cannot get access to iTunes or if you need to troubleshoot the device. Afterward, you can restore the device’s information using one of your recent iCloud backup files if desired. Tips Writer Bio

How to Restore an iPhone Without Connecting to a Computer - 7