They dont inform you but charge 15 rupees for an incoming sms and 15 rupees for incoming call !! then they give you used AT & T numbers of American people you get mad incoming calls and mad SMSs without touching your phone bill will come to 10, 000 in 9 days.
My number belonged to Melissa and had a horror time receiving her smss and calls , lastly even if u disconnect call u get charged - 15 rupees .. per disconnection WOW!! lot of other free incoming free services are available in India - google!! for US and Canada.. one call to India for 10 mins was charged to 800 approx!! Horrible horrible y take Matrix then.!!