Authentification problem on samsung galaxy T210

Solution
I would double check the password you put in the WiFi vs the one you are typing into the tablet. Also check that you are accessing the right WiFi. Similar names and all that. Those are the causes of authentication problems. Wrong password and/or wrong WiFi.
I would double check the password you put in the WiFi vs the one you are typing into the tablet. Also check that you are accessing the right WiFi. Similar names and all that. Those are the causes of authentication problems. Wrong password and/or wrong WiFi.
 
Solution