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Vodafone-*111*2#
Videocon-*1#
Bpl-*222#
Relaince-*111#or *1#
Idea-*100#
docomo-*580#
Airtel-Send sms IM to 57070
Aircel-*#1#888#
Uninor- *1#
BSNL -Call 24365 and ask them