In Bangladesh we have several phone companies including GrameenPhone,
Airtel(Former Warid), Robi(Former Aktel), Banglalink, Teletalk,
Citycell. Most phone companies come with several services including easy
refill, updated news, cricket news, religious information via sms or by
calling certain number to them. In this post I will mention about how
you can check your own SIM mobile number without any charge. If you
phone company provide this service then you can easily check it.
Airtel (Warid) - *121*6*3#
GrameenPhone - *2#
Banglalink - *511#
Robi (Aktel) - *140*2*4#