using this hack trick for Airtel network operator you have to pay 106 Rs for 2GB of data plan Validity 1 month and it will works on your 2G Connection and Gives you speed of 3G sim. This doesn't sound bad.Here is the steps for this tricks you have to follow. Follow them carefully.
Note:you can use only a free data usage of 2GB. In 3G speed you wont notice your 2GB get finished. so always try this trick in a low balance…
1. Activate an 8rs 3G Plan and then wait for the service is started. ( In 8rs Plan you will get 10MB free data usage for 1day ).
2. After the service activation, use only 2-3 MB of data and then recharge the 98RS MobileOffice Plan on the same day. and do not use internet till your 8RS plan validity get finished.(wait for 1 day)
3. After the one day waiting, you can use internet with 3G speed and your 98rs MobileOffice plan is active , it won't charge you any thing..
But this trick works mostly in all 3G available states in India But if its not working in your state then i am not responsible for it.