Here is a 100 % working trick to unlimited use BSNL 3G at the cost of
First of all Buy a normal 2g bsnl's sim card and keep balance 50+ rs.
now activate gprs by sending sms GPRS PRE to 53733 It will be
actrivated in 24 hours, after activation get gprs settings by calling c.care
Now do e-recharge with 230 rs (or whatever unlimited plan exists in your area)
in it, After activation You have to chnage only one thing in yor 3G enabled cell.
Go to settings>tools>settings>phone&g
t;network>network mode> now select UMTS
THEN do manual searching for network u will fing bsnl 3g network there wid small 3g logo along wid its name,select it as default
Now see your data singnal
s logo..... vola it is converted into 3G
You will get near about 500kbps to 1200 kbps speed
Remember use BSNLEGPRS or BSNLPREPAID as ur access point
This trick is copy pasted from some other source
but its 100% working
Enjoy 3G at appr. no cost.....