STD call rates are reducing in India every day, but still, they are not free. Today I bring you a hack to make free STD calls. I am exploiting a loophole in Rediff’s ad service. You can search for an ad on Rediff local ads and call the advertiser through Rediff. Rediff will call you first and then connect you with the advertiser of that ad. In this hack you basically need to post one ad, with your phone number. After that, every time you have to call a friend, you can search for that ad and pretend to be your friend. you want to call. Rediff will thus, call you as the advertiser and it will call your friend whose number you provided. Confused? Let me explain it step by step.

That is it. You made a free STD call. The catch is that one call lasts for only 1:30 minutes. Additionally, there is a limit of calls made per ad per week. However, they let you post multiple ads with same mobile number. That is you can do away with this weekly limit easily.