detect which mobile number you use right now!!

now  which sim number is/are inserted or use in your phone? forget it? then there is no need to afraid of, this is the solution below.--
just type the service command code for the unique service provider, then easily pop up the number in your mobile screen...

Grameenphone Bangladesh = *2#
Banglalink Bangladesh         = *511#
Robi Bangladesh                   = *140*2*4#
Airtel Bangladesh                 = *121*6*3#