Vodafone-*111*2#
Videocon-*1#
Bpl-*222#
Relaince-*111#or *1#
Idea-*100# or *789#
docomo-*580#
Airtel-Send sms IM to 57070 or *140*1600#
Aircel-*#1#888#
Uninor- *1#
BSNL -Call 24365 and ask them
Videocon-*1#
Bpl-*222#
Relaince-*111#or *1#
Idea-*100# or *789#
docomo-*580#
Airtel-Send sms IM to 57070 or *140*1600#
Aircel-*#1#888#
Uninor- *1#
BSNL -Call 24365 and ask them