Dial *212# Or *130# = balance info
Dial *147# = Idea Service Menu
Dial *789# or *100# = To Know your Mobile Number
Dial *567*Mobile Number*Rs.# :- Balance Transfer
Dial *147# :- Idea Service
Dial *130*Recharge Code# :- Idea Recharge
Dial *369# :- Idea Pack
Dial *567# :- Data Price
Dial *150# :- Idea Account Lone
Dial 12345 :-Costumer Care
Dial *125# or *131*3# :-To Check GPRS balance or data
Dial *111# :-Idea Manu
For karnataka :-
Dial *456# or *457# for account balance
Dial *451# for SMS balance
Dial *100# to know ur own number
Dial *800# Data Plane