Useful Codes =>
1) Check main balance validity *333*1*1*1# .
2)Check last recharge detail *333*1*2*1# .
3) Check internet data validity *333*1*3*1#
. or *367*3#
4) Check VAS Service balance*333*1*4*1# .
5)Activate CallerTune*333*3*1*1# .
6) Deactivate callertune*333*3*1*2# .
7) Act MissCall Alertt*333*3*2*1# .
8) Deactivate miss call alert *333*3*2*2#