How do I reset my Android 7 phone or tablet to factory settings?

Delete all data before selling or giving sb the device. To do this, return your Android 7 phone to its factory settings:

1. [Application Menu]
2. [Settings] 
3. [Copy and delete data] 
4. [Factory settings]
5. [Reset the phone]

This way, you can protect yourself against unauthorised access to your personal information.