How to check INTERNET BALANCE in BSNL(SMS Method Included)

How to check INTERNET BALANCE in BSNL(SMS Method Included)

Now many of my friends don't know how to check the internet balance with SMS METHOD.If they use it in DONGLE they hacve to remove SIM again and again and put it phone. WANNA GET RID OF IT, READ BELOW:-

Find information on SMS shortcodes and USSD codes to check BSNL GPRS/2G/3G Data usage balance and validity.
To know your main BSNL Account Balance and Validity information dial *123# from your BSNL mobile or dial 123 to check your balance and validity on the IVR.
Data Balance & Validity: *123*10#
Night Balance & Validity: *123*8#
SMS: ‘USAGE DATA’ to 53738
Onnet and offnet free minutes: *123*9#