How to check own phone or SIM number? (GrameenPhone, Airtel, Robi, Banglalink, Teletalk, Citycell)

To check your Phone or SIM number:
For GrameenPhone Press *2#


For Airtel Press *121*6*3#


For Robi Press *140*2*4#


For Banglalink Press *511#


For Teletalk Press *551#


For Citycell Type "MDN" & send it to 7678





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