How To Check Balance ?

How to check balance?: This question arises for all  telecom customers,since it`s the time of MNP(Mobile Number Portability) in India and everyone changes their network provider as they wish.As the number of network providers are increasing day by day, most of the customers are in search of methods to check balance and all.I have tried to include balance checking methods of all the main network providers in India such as Airtel, Reliance gsm, Idea, Tata Docomo, Vodafone, Bsnl, T24 mobile, Videocon, Uninor. 

Airtel prepaid account balance:

Dial *123# to check your balance in Airtel prepaid.To know it through IVR call to 123 from your Airtel mobile.
Reliance gsm prepaid account balance:
Dial *367# to check your Reliance gsm account balance.
Aircel prepaid account balance:
Dial *125# to check your Aircel prepaid account balance.  

Tata Docomo prepaid account balance:
Dial *111# to check to your Tata Docomo prepaid balance.

Idea prepaid account balance: 
Dial *123# to check your Idea prepaid account balance.

Vodafone prepaid account balance:
Dial *141# to check your Vodafone prepaid account balance.

Uninor prepaid account balance: 
Dial *222*2# to check your Uninor prepaid account balance.

Videocon prepaid account balance:
Dial *123# to check your Videocon prepaid account balance.

T24 mobile prepaid account balance:
Dial *111# to check T24 mobile prepaid account balance
Sms BAL to 52121 to know your shopping balance in T24 mobile.