Its happy browsing again.
Its easy to activate and it gets activated for the whole month and you can activate it before ur daily fup gets exhausted,all you need to go to the usage check page and click on upgrade and than select topup from 3 of the available 1gb,1.5gb and 3gb and click topup. you can activate it many a times i.e if you click 3gb topup twice,you will get 1.5gb for 249/299 plan or data as per ur plan thats the default plan data plus 6gb data everyday for the running month and you dont have to do it everyday.You won't be charged anything for that as i tried 3 topups last month and nothing was charged in the bill.