Sometimes when hard resetting your iPhone or iPod Touch don't solve your problem then you need to restore original default factory settings on your iPhone via recovery mode. On restoring original factory settings you will loose all data/information you have stored on your iPhone, so it is always advisable to backup your data before you may proceed to the restore procedure. Usually iTunes automatically makes a backup on connecting and sync your iPhone with the program.
Note that there is a difference between doing a hard reset to your phone and restore factory settings on your phone. Hard reseting your phone will just do a force shutdown on your phone incase your phone is unresponsive to any of your inputs. So you won't be losing any of your settings/data after doing a hard reset. Meanwhile, restoring factory settings on your phone will delete all user data/settings from phone memory and will restore factory settings on device i-e after restoration your phone will be just like as if you have bought a new one.
How To Restore Factory Settings On iPhone
- Turn off iPhone – Hold down the Sleep/Wake button for a few seconds until the red slider appears, then slide the red slider. Ignore this step if your iPhone is already off.
- Press and hold down the Home button for about 10 seconds until a yellow triangle with a text which says Please Connect to iTunes appears.
- Plug the iPhone into Mac or Windows PC. Release the button if you haven’t.
- Run and open iTunes if it’s not already opened yet.
- iTunes will prompt a message that says iTunes has detected an iPhone in recovery mode. Click OK.
- You will be taken to the iPhone pane. Then, click on Restore.
- Wait for the full restoration process to complete, and the iPhone will be back to the original settings state as when it left the manufacturing factory, typically a working phone again if you face any problem, unless it’s hardware related.