Help Hi can u pls help me

[triger]

My s3 gt i9300 has a problem
My phone was acting crazy
Authentication error occured on my wifi
Is any of u guys has idea and how to solve this i am all stock 4.3 jb thank you

 

[Madbat]

Acting crazy is not a very good description. Lol. For the WiFi, try forgetting the network (long press on network name then tap forget) and try resetting your router. If that's not the problem, you have to give more info than acting crazy.

 

[triger]

I did everything u said
I try also factory reset my s3
But the promblems still exist
My other device connects pretty well

 

[Madbat]

Authentication error usually means wrong password. After you forgot network you entered your password again correctly? Well I'm stumped. When it happens to me its usually my router. I unplug it for a minute and plug it back in and its fine. But maybe someone else will chime in with better insight.

 

[mydian]

I get this problem every once in awhile. I just reboot my router and it's fine again for a month or so.

 

[danielbd]

does your phone have any conection after you enter the password?