Before you start learning how to hack you need to have BSNL 2G SIM and ultimately 3G support mobile phone.
Just follow up the instruction:
- Recharge your 2G SIM with Rs 1 to convert it to 3G SIM and use them for free hours
- Check the balance by dialing *123#, the message will show that your GPRS free usage is ZERO MB
- Now recharge again with Rs 1 to convert in to 2G SIM
- Now recharge with Rs 274 for unlimited GPRS usage for 2G SIM
- Now again recharge with Rs 1 to convert in to 3G SIM
- Thats it You have hacked your BSNL 3G for unlimited browsing check the GPRS free usage by dialing *123# it will show 1250000 MB free usage.