If your iPhone is acting up or just needs a quick reset, here’s how to do it on iTunes:

  1. Open iTunes and sign in if you aren’t already logged in.
  2. Click on the “iPhone” tab at the top of the window and select “Restore.”
  3. Select your iPhone from the list of devices and click “Next.”
  4. Enter your Apple ID password if prompted and click “Next.”
  5. Select the option to restore from a backup or use iTunes’ built-in restore feature (if you have one) and click “Next.”
  6. If you have more than one device set up with iTunes, select which device you want to restore your iPhone to and click “Next.”
  7. Click “Restore” to start the restoration process. ..