how to use idea 3g plan free

This post is especially for idea users. Now use idea 3G daily plan for free. First of all activate the daily plan by dialing *567*910#(have to maintain balance above 10rs).
Access point apn is imis. At the night(11pm to 3am), seduce the balance below 5rs by making calls and sending sms. Now the gprs plan will exist next day also. Repeat this trick daily and 3g internet for free. (you are spending money for calling and sms not for gprs)