Problem after 4.1.2 update.

i have noticed that on my school wifi and starbucks wifi, like you have to go to the webpage and sign in. That has always been there for me though.
 
++ There's a new version 3.5, you should check it out.

And I'm not sure whether stock has all of our options such as that screen.

Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

yes, it has that screen. i'm running stock.
 
After installing new version of Android, I noticed that sync is turned off. I am unable to turn it on. The toggle Account & sync is not there in settings. Can anyone help me in turning on sync?