Q: use cellular data for is empty

my wifi works well

my 3g connection is active

but all my apps are not connecting to internet when im only using 3g

n if i go to cellular:

USE DATA PLAN FOR:

it shows only PASSBOOK n no other application like google viber or whatsapp not even the default mails in phone is connecting to internet (3g)...

i have already reset the phone twice erased my phone thrice n still it doesnt work....its the same....plzz help..!!!