How to View Own Mobile Number On your mobile screen

You may encounter a situation in which you cannot know the number of a
sim unless it is provided by the operator. If it occurs so, you can use
the following codes to view own mobile number on screen:

Idea : *789#

Reliance : *1#

DoCoMo : *#1#

Virgin GSM : *1#

Aircel : *888#

Loop : *222#