Free callertune for uninor in kolkata. And try
in your state. .
Follow the steps
1) just dial. . 522040. . and
activate it.
2) u can change ur tone by sending
the song. . name to 52200.. . thats the only
trick that u can enjoy..
3) Just deactive the
callertune before 30 days and after get the
deactivate sms, u call to 522040and activate in
for next one month. And Enjoy unlimited..
Note- This trick is share by my friend .
I have no uninor sim so Try at your risk