Xperia U internet problem

[Shibashis]

I have bought Xperia U from kolkata(India) last month I an using GB.
Internet woks fine with wifi but while I enable data only the browser works the other services like facebook,whatsapp,google play store,mozilla browser doesn't open it says unable to connect .I am using unlimited data plan form aircel. what should I do.
Thanks on advance.

[Jake-SonyXperia]

With the information provided, I suggest trying the following to resolve the issue.

Menu > Settings > Xperia/Sony Ericsson > Internet Settings > Accept Disclaimer > Select network carrier.

Once this has finished try using the applications to see if this has resolved the issue.

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