Unauthorized factory reset in a grand Prime

[Android Central Question]

Why does my phone say unable to access web browser for Wi-Fi sign in due to an unauthorized factory reset after I reset it using the hardware keys to master reset it

 

[B. Diddy]

Welcome to Android Central! An unauthorized factory reset means that the phone was reset without first properly removing the Google account. Has this always been your phone, or did it belong to someone else before?