Airtel--*141*10#
or can also call 52141
Vodafone--call 1241
Or SMS CREDIT to144
Idea-- *150*10#
*165*5#
*444#
Aircel-- *414#
or call 12880
or SMS LOAN to 55414.
Reliance--*141#
or SMS YCR to 51234
BSNL-- SMS CREDIT to 53738.
Uninor--*141#
Docomo--*369#