1)Dial to 12140 and select ur language then
2)press 2 then
3)press 10 digit mobile number of which u want to check for balance then
4)Press 1 to conform
5) It will ask mobile pin code press1234
6) Press 3 to find balance in ur mobile.

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To Recover Information From A Corrupt File
follow these steps
goto
start > run > type cmd
when command prompt opens type
recover file.ext
where file is file name & ext is extension of file
for eg you want to recover from abc.txt type
recover abc.txt
Note:
If you have a disk with damaged sectors, you can recover as much information as possible from the damaged file. Data that is not damaged can be retrieved but data in damaged sectors will be lost.