Nokia Lumia 520
If your phone gets slow or doesn't work as it usually does, it may help to restore the factory default settings. All settings and configurations you've made on your phone are deleted.
1. Find "about"
- Slide your finger left on the display.
- Press Settings.
- Press about.
- Press reset your phone.
- Press yes to accept.
- Press yes to confirm.
- Wait a moment while the factory default settings are restored.
- Follow the instructions on the display to set up your phone and prepare it for use.