Here are a list of all USSD and SMS codes of BSNL to check balance, activation and deactivation of services.
BSNL (Bharat Sanchar Nigam Limited) Is An Indian State Owned Telecommunications Company And Sixth Largest Mobile Telephony Provider In India. They Offers Value Added Services Such As Free Phone Service (FPH), India Telephone Card (Prepaid Card), Account Card Calling (ACC), Virtual Private Network (VPN), Tele Voting, Premium Rate Service (PRM), Universal Access Number (UAN). Here Are The List Of BSNL USSD Codes. Use The Respective USSD Codes To Check Main Balance, GPRS / 3G Data And To Check 2G And 3G Data Balance Inquiry And Lot More Details In Few Fraction Of Seconds.