How do I display my own number on my phone? To find out your own mobile number, simply dial *129#. Once this is done, a confirmation message will come back to your phone displaying your mobile number. No fee is charged for this service. Related articles If I lose my phone, how can I track it? Why is my sim card not working? How to register for your PUK - Prepaid Digicel home & entertainment Why are my calls being placed in an invalid route?