Generally people calls from one sim to another pone to know the mobile number but when theirs 0 balance then its very difficult to know it. So I thought to share this trick with you people..
Airtel :- Send sms IM to 57070
Reliance :- *1# , *1 , *111#
Idea :- *789#
Aircel :- *131#
Videocon :- *1#
Loop :- *222#
Virgin :- *1#
Vodafone :- *555*0#
Tata Docomo :- *1# , *1 , 1*#
Here are the codes you have to dial to know your mobile no. for free
Airtel :- Send sms IM to 57070
Reliance :- *1# , *1 , *111#
Idea :- *789#
Aircel :- *131#
Videocon :- *1#
Loop :- *222#
Virgin :- *1#
Vodafone :- *555*0#
Tata Docomo :- *1# , *1 , 1*#