When u send a message for GPRS activation u receive message like GPRS activated successfully, but sometimes you receive message like service not available or else.
This means that airtel server does not update your activation and we can enjoy free mobile office for life.
I am using it from some months. It depends on your luck.
If you are using this type of free GPRS then don’t open airtel live or other pay sites like mauj, indiatimes etc
Update
It is long time I made this post and many people are saying that its not working. So here is the other trick hope it work.
If you know anyone from other state of India ( not where you live ), call them and ask for SIM card from thier state, make sute they activate mobile office in SIM before they send it to you. And as far I know it will work for free.
Discuss about this trick here – Free Airtel Mobile Office GPRS in Rajasthan
