Nokia 5 User Guide
Restore original settings
Accidents can happen – if your phone is not working properly, you can restore its settings. Or, if you 
buy a new phone, or otherwise want to dispose of or recycle your phone, here’s how you can remove 
your personal info and content. Note that it is your responsibility to remove all private content.
Reset your phone
    Tap Settings > Backup & reset > Factory data reset.
    Follow the instructions shown on your phone.
Nokia 5  Manual PDF