Pakistan telecom authority order to telecom companies to shutdown the all SMS and call packages till 2nd September. So all kind of packages like daily sms or voice packages, fortnight packages, monthly packages, unlimited packages will be dis-continue. So you can enjoy these such packages if you are using till 2nd September.
According to this letter all SMS, voice(call) packages will be stop. So now you have to pay for each SMS and each Call.
Due to this action by PTA its normally expectation the Postpaid demand will increase and people will convert to Postpaid.
Here is screenshot of PTA letter: