I have found many users arenot able to
findthe BSNL 2G GPRS , 3G datausage.
The BSNLdata checking code mayn’t besame for all states.So you mayget error like
WrongNumber or Recharge NotPossible.Here is the way to check theBSNL 2G GPRS, 3Gdata usage:
For Tamilnadu BSNL users BSNL 2G Prepiad customersmay send an SMSto know the balance free datausage.

Type DATA2G to 53733 .

Tamilnadu TN BSNL 3G prepaidusers can cheick their datausage bysending an SMS as

DATA3G to53733 .

FOR UP USER

Dial *123*6#

For Kolkata BSNL Users Dial *123*10# to know free3G and 2G
datausage if the customer belongstoKolkata.Tested in Bihar
andJharkhand... For West Zone BSNL Users BSNL customers from WestZone of India canget the Data usage by simplydialing

*112#.
Tested and checked in GujaratandMaharashtra. For Kerala BSNL Subscribers Kerala customers can dial *124*1#
to knowabout the remaining databalance on youraccount.