Only first three months,then its costly. Review on Reliance Jio

Jio is the Reliance opraing mobile operator brand.It was launched by the mukesh ambani since 5months ago.I recently bought a 4G smartphone.Reliance Jio recentl;y announced the Jio offers to all kinds of 4g smartphone.Initially it is offereing the offer for just Lyf and samsung mobile.Thenj it is caryry forwarded to all 4g enablerd smartphone.I have a lenovo smartphone.I also taken the connection of Jio and now iam a usaer of it.They were saying that the JIo is free of cost for all kinds of usage such as data, calls etc upto december 2016.Then it will collects the high amount from ourside by increasing the billings and data charges.And Jio runs on just 4g only.It does not support 3g/2g networks.For Jio connectuion we need to install the jio many apps.Then they will provide a barcode for us.By showing the barcode we have to take the Jio connection.I used the just 1Gb of dat in these 1month.The internet speed is like 2g only.It doesnot like airtel 4G.Airtel having excellent 4G speed.Jio is not like airtel or Idea.They are top brands.Jio is not reaching their speed.And the calls also initially not connects.Initially it says busy tone for 3 to 4times.then the call conversation will takes plac4.I feel very disguisty with the calling.I hates in the speed as well calling time.