Does any 1 knows how to solve problem that my Samsung Galaxy S4 have? I couldn't connect to the WiFi. My home WiFi can be connect just that i can't connect to my office WiFi and public WiFi. Password is correct but still couldn't connect to it. Always trying to connect but pop up message, authentication error, My boss using S4 as well but she can connect. I updated my firmware from Kies3, since i updated the firmware, its started have this issue.